<h2>CHAPTER XII</h2>
<p>I threw up my curtain next morning to find
London settling down into a sea of fog. Already
the Thames was wholly hidden, and the water side
of the embankment showed only faint, twinkling
lights, just on the point of complete extinguishment.
The caped policeman, the hurrying butcher’s boy,
the laborers and the charwomen passing through
the garden below, had all completely lost their
individuality and became, in place of common
London types, misty twentieth century Niobes.
But dismal though it was without, my spirits were
cheerful enough within as I started down to meet
Tom and Dorothy.</p>
<p>We were half through breakfast when Hamerly’s
card was brought in, to be followed a few
moments later by the man himself. I looked with
delighted interest at the involuntary start that he
gave when he met Dorothy. How I wish I might
rightly describe her as she stood there, lighting by
her very presence the gray interior of the dining-room,
shrouded as it was by the “London particular.”
Everything else was gloom, save in the circle
where Dorothy gave the radiance of her presence.<span class="pagenum"><SPAN name="Page_161">[161]</SPAN></span>
Hamerly’s silent tribute was no more than she
exacted from all who met her. Again and again I
marvelled at my audacity in believing I might have
this incarnation of youth, of power, and beauty for
my own.</p>
<p>Such thoughts raced through my head as I sat
watching the swift interchange of question and
answer between Tom, Dorothy and Hamerly. In
response to their inquiries, Hamerly related the
story he had told me the day before, and as he
ended, asked, “What are you going to do next?
How are you planning to use your man Swenton?”</p>
<p>Dorothy answered for Tom and myself. “We
are going straight to Dr. Heidenmuller’s laboratory,
taking Swenton along. I want to have the whole
scene before my eyes to see what can be made out
of it. We should be very glad to have you come
with us, Mr. Hamerly.”</p>
<p>Tom bent towards me with a look of mock
anguish on his brow. “How I had hoped for a
peaceful Sunday morning,” he said, in a low
aside, “and now we’ve got to plunge out into a
nasty fog, and chase all over this benighted city.
Never mind, I might have known. I never can
have my own way.”</p>
<p>Despite his plaint, Tom was the first one ready,
as, clothed in raincoat and slouch hat, our little
party gathered under the shelter of the glass
awning inside the court.</p>
<p><span class="pagenum"><SPAN name="Page_162">[162]</SPAN></span></p>
<p>The massive dignity of the carriage porter,
shrouded in a white glistening rubber coat, loomed
bulkier than ever, as, with an elephantine grace,
he whistled shrilly twice. Out of a dim background
two hansoms dashed into the circle of
light where the arcs of the entrance fought bravely
against the encroaching fog.</p>
<p>“I’m going with Mr. Hamerly,” said Tom.
“You take Dorothy in the other hansom, Jim, and
drive straight. We’ll pick up Swenton on the way.
Give the address, will you, Hamerly?”</p>
<p>“Old Jewry, third alley, this side of Gresham
Street,” said Hamerly, and the cabbies nodded.</p>
<p>Dorothy stepped lightly in before I could lend
my aid. I followed, the porter closed the curtaining
doors, pulled up the window, and we were off,
embarked on a sea of fog. As I looked out, I
thought I saw Tom speaking to our driver, but I
could not be sure.</p>
<p>“Old Jewry,” said Dorothy dreamily. “How
delightfully Dickensonian. I haven’t an idea where
it can be, and I don’t want to know. It’s much
more fun plunging off into an unknown world of
adventure in the good ship Hansom Cab.”</p>
<p>I happened to have a strong idea where the
Old Jewry was, but some guardian angel kept me
from speaking. Never before had I possessed all
that was precious to me in life in the small capacity
of a hansom cab. Outside passed slowly by a dim<span class="pagenum"><SPAN name="Page_163">[163]</SPAN></span>
neutral city, into which street lamps cast pointed
lines of light in a vain endeavor to pierce the gloom,
where ghosts, appearing suddenly under our horses
feet, disappeared quite as suddenly into the blanketing
darkness, and where now and then a motor
bus came looming past us, like some high-pooped
caravel of Spain. Now and again we stopped.
Now and again we crept at a foot pace through
what seemed at one and the same time an eternity
of joy and a fleeting moment of happiness. Dorothy
lay back against the cushioned corner, taking
in the experience to the utmost. We spoke but
seldom. I proffered no suggestions. It was enough
for me to sit beside her, to know the rough cloth
of her tweed ulster touched my hand, to feel
through every inmost fibre of my being her dear
and sweet proximity. On and on we travelled,
till at length I came to the sudden realization that,
according to all my impressions, we should have
been at our destination long before. I looked out
carefully for the first time. The fog was as dense
as ever. I knew nothing of my whereabouts.
Saying no word to Dorothy, I kept on trying to
pierce the wall of cloud, as a hundred questions
began to spring up in my brain. Was there something
queer in this? Was the driver lost, or was
he purposely taking us in some dangerous direction?
It did not matter, anyway. As I looked at Dorothy,
I knew I could protect her against a thousand<span class="pagenum"><SPAN name="Page_164">[164]</SPAN></span>
perils, and I felt a warm glow of power, of courage
springing within my soul. Just then I saw some
arc lights ahead, and I peered yet more carefully.
Under them the fog seemed less dense, and when
a brass plate showed I scanned it eagerly. “Charterhouse.”
I could read no more, but that told me
where I was. In Charterhouse Square, beyond
Smithfield, almost to Clerkenwell Road. We had
gone far out of our way, while I had been dreaming.
I threw up the driver’s door. “You must be out
of your way,” I cried.</p>
<p>“H’I couldn’t do better, sir,” came the answer.
“I ’ad to come round, I’m ’eaded straight for the
h’old Jewry, sir.”</p>
<p>Perhaps there was a note of laughter in the man’s
voice, certainly there was nothing sinister. I recalled
the glimpse I had caught of Tom beside the
cab at the Savoy, and, my qualms ceasing, I inwardly
blessed that mischievous spirit.</p>
<p>Dorothy looked up as I spoke. “Is it all right,
Jim?” she asked.</p>
<p>“It is perfectly all right,” I answered, and she
fell back into her happy meditation, while I inwardly
made still more remarks on her ingenious
brother. Silent and happy we went on, my mind
quite at rest now, and not in the least anxious to
come to the end. The cab stopped and the little
door at the top opened with a click.</p>
<p>“This is the place, sir.”</p>
<p><span class="pagenum"><SPAN name="Page_165">[165]</SPAN></span></p>
<p>I jumped out and looked around. No cab in
sight. “Well,” I said to Dorothy, “here’s a pretty
go. Nobody in sight, and I don’t know which is
the house.”</p>
<p>Without a word, Dorothy leaned forward and
whistled a single bar. Out of the fog came the
notes repeated, and a moment later across the
street came Tom.</p>
<p>“Oh, you’ve reached here finally, have you?”
said he, a trace sarcastically. “I thought you’d
never arrive; I couldn’t imagine what kept you.”</p>
<p>As he spoke, I heard a sort of choked gasp from
the top of the hansom, but fortunately Dorothy’s
suspicions were not aroused.</p>
<p>“It hasn’t seemed so very long,” she answered
simply, to which Tom responded, “Oh, really,
hasn’t it?” as he took her arm to lead her across the
street. He called back to our cabby as we left,
“Drive forward a little, and you’ll find a sort of
shelter where you can wait. The other cab’s there.”</p>
<p>“Right, sir,” came the reply, and we heard the
slow movement of his disappearing wheels, as we
three were left in the ocean of fog.</p>
<p>“Swenton’s hunting up the caretaker,” said
Tom. “Hamerly and I have been waiting for him
to come back. The old rooms are locked up
tight.”</p>
<p>We found Hamerly in a vestibule where a single
gas lamp flickered, and, as we waited, we fell to<span class="pagenum"><SPAN name="Page_166">[166]</SPAN></span>
talking in low tones. The mist seemed to bring our
voices to a minor key. Perhaps ten minutes had
passed, when the door opened, and Swenton
entered, accompanied by a man in a coarse ticking
apron.</p>
<p>“This is the caretaker, sir,” he began, bowing
to Dorothy and me. “He refused to let me in to
get my things. Says the laboratory was left after
Dr. Heidenmuller’s death to another chemist, a
gentlemen who bought all the doctor’s stuff from
the heirs. He was there, off and on, for a little
while, but he went away quite a long time ago,—went
one night suddenly and never came back.
This man says the agents won’t allow anybody in.
I brought him here, so you could talk to him if you
wished.”</p>
<p>The caretaker stood silent and sullen as Swenton
spoke, his hands deep in the front pockets of his
apron.</p>
<p>“I do want to speak with him,” said Tom
briefly. “Come here,” and he led the way apart,
the caretaker following. A moment’s conversation
was broken only by a golden clink, accompanied by
the jingle of keys, after which the caretaker disappeared,
and Tom turned back to us.</p>
<p>“I have here,” he said mysteriously, “a bunch of
keys which I strangely found on the floor in the
rear of this hall. Suppose we ascend to the top
floor and see if they will work there.”</p>
<p><span class="pagenum"><SPAN name="Page_167">[167]</SPAN></span></p>
<p>Dorothy’s face was clouded as Tom came up to
the spot where we were standing a little apart,
Hamerly and Swenton had already started up the
stairs. “I’m not sure that you are doing right in
this, Tom,” said Dorothy swiftly, in a low voice.
“I don’t like to bribe a servant to let us into a
place where we don’t belong.”</p>
<p>Tom’s face became serious in a minute. “I
don’t like it either, Dorothy,” he answered gravely,
“but I’m going to do it. Do you remember the
little German middy lying down at the bottom?
As long as the man who is trying to stop all war is
at large there are thousands of men in hourly peril.
I honestly believe we are the only ones who can run
the man down. I am convinced we shall be wholly
justified in such action.”</p>
<p>Dorothy stood for a moment in silent thought.
“I think you are right, Tom,” she said quietly. “In
this case I hope and believe the end will justify the
means. We must find ‘the man.’ Go ahead.”</p>
<p>Stumbling through the darkness, we reached the
top, where the flame of a match showed a strong
oak door with two Yale locks upon it. Tom had
the keys in immediately and threw the door open.
Once within, Swenton passed with accustomed
step to the wall, turned a switch, and incandescents
lighted the whole place.</p>
<p>We were in a sort of anteroom, with desks and
chairs. “The outer office,” said Swenton briefly.<span class="pagenum"><SPAN name="Page_168">[168]</SPAN></span>
We passed through an inner door. “The main
laboratory,” remarked Swenton. This was similar
to any other laboratory. A good sized motor
generator in one corner, covered by a rubber sheet,
a couple of tile-topped tables, a set of shelves on one
side, filled with labelled reagent bottles, a set of
glass cases, supported on a base filled with
drawers, on the other. In the cabinets were glass
ware and apparatus of various sorts. Tom started
for the case, but Dorothy laid a restraining hand
on his arm.</p>
<p>“Wait till we have seen it all. Then we’ll go
over the whole, piece by piece.”</p>
<p>Tom nodded, and we went on. There were
three doors on the opposite side of the wall. Swenton
passed to the first and opened it. “The storeroom,”
he explained. Within were wooden cases
of glassware, large carboys of acid, glass tubing on
racks and wire on spools. In one corner was
apparently a hospital for broken or disused pieces
of apparatus. We turned from this to the second
door. “The balance room,” said Swenton, as he
threw open the portal. Three balances in polished
wood and shining glass met our eyes. There was
nothing else in the room. Swenton opened a third
door. “The spectroscope room,” he said. “Beyond
is the doctor’s private laboratory.” A big
piece of apparatus on the table was covered with a
green cloth. Beyond was a wooden door. Despite<span class="pagenum"><SPAN name="Page_169">[169]</SPAN></span>
myself, I felt a queer, nervous tremor pass over my
frame, as I looked at the commonplace wooden
panels, behind which Dr. Heidenmuller had sat
dead, killed by the same mysterious power which
had slain the men I had seen lying quietly at the
bottom of Portsmouth Harbor. Tom and Hamerly
were as keen as hounds on a scent, Swenton
interested but more indifferent, Dorothy pale, her
eyes glittering with excitement. Hamerly reached
the door first, tried it and it swung back. The
incandescent had not been turned on in the
spectroscope room, and the only light which entered
was the golden lane, which came through from the
main laboratory. It seemed like a stage setting.
The light fell on a heavy wooden table and a
couple of Windsor chairs. The rest was but faintly
outlined.</p>
<p>A moment’s pause on the threshold, as if we
expected to meet some horror, we knew not what,
and then we rushed in together. There was nothing
to be seen. Wood panelled walls; windows
sealed by wooden shutters; the wooden table and
the two wooden chairs; that was all. We stood
there silent, until Tom broke the quiet.</p>
<p>“Nothing to do but to Sherlock Holmes it,” he
said. “We have all day to run this thing down.
Swenton, there’s a piece of apparatus here that I
need. The doctor may never have had it outside
his room as a whole, yet we may find traces of it in<span class="pagenum"><SPAN name="Page_170">[170]</SPAN></span>
the laboratory or the storeroom. Are you willing
to help us hunt?”</p>
<p>“I should be the most ungrateful man living, sir,
if I were not,” said Swenton earnestly. “I owe
my wife’s life to you and Miss Haldane.” He
glanced at Dorothy.</p>
<p>“So that’s where you have been the last two
mornings,” I whispered to her, as Tom went on.</p>
<p>“I found them just coming out of great distress,”
she answered simply; “I am so glad I was able to
help.”</p>
<p>“Now,” cried Tom, “let’s sit down to another
counsel of war. Come out into the outer laboratory
and we’ll talk it all over.”</p>
<p>The drawn shades, the bright gleam of the
laboratory lamps reflected back from polished
tile and cabinet door, gave a distinctly cheerful
aspect to the scene as we settled down.</p>
<p>“I have been thinking this matter over carefully
for some time,” began Hamerly, in his rather
careful tones, once we were seated, “and if you do
not object I should like to present my theories.”</p>
<p>“Go right ahead,” said Tom.</p>
<p>Hamerly went on somewhat thoughtfully. “I
think you are wrong in saying we ought to follow
the methods of Sherlock Holmes. We ought rather
to follow Dupin, Poe’s detective, the man who
preceded Sherlock Holmes. Try to reason out
what the doctor would have on hand with regard to<span class="pagenum"><SPAN name="Page_171">[171]</SPAN></span>
the power, and where he would have it. Try to
analyze the action of his brain, rather than hunt for
minute data. Let’s see what we know about Dr.
Heidenmuller. He was a German of the most
typical student type. That means he would never
do anything without putting it down on paper. He
had every desire to keep what he was doing from
those around him. That is evident from the fact
that Swenton never knew anything about the interior
of this room. If the doctor made notes, as I
believe he must have done, he would have wanted
them within reach. So he must have had them in
this room. He was a brilliant scientist, therefore
he would not by preference have used any of the
ordinary methods of concealment. His notes and
apparatus were likely to take up a comparatively
large amount of space, so that we are impelled to
the definite conclusion that there is a concealed
closet somewhere in that inner chamber. If we
could take the time to remove the whole of the
walls, and could get permission to do so, we could,
I believe, find the hiding place, but that would
involve time, expense, and running down the people
who at present control the place and own the
apparatus. I strongly question whether that
would be worth while.”</p>
<p>“No,” said Tom, “I don’t believe it would. If
there were any chance of the man who has hired
this place being the man we are after, I’d say go for<span class="pagenum"><SPAN name="Page_172">[172]</SPAN></span>
him at any cost, but I don’t believe there’s one
chance in a thousand that it is. He’s too sharp to
stay around where Dr. Heidenmuller died under
such peculiar circumstances.”</p>
<p>“I agree to that,” said Hamerly.</p>
<p>“And I, too,” I chimed in.</p>
<p>Dorothy said nothing, but as I watched her, I
saw the rose of her cheeks growing deeper, and
that peculiar change in her eye that showed she had
already leaped beyond the reasoning of the others
and grasped the answer by intuition. “One question
first,” she began, “Mr. Swenton, did the
doctor leave the door to the spectroscope room
open when he went into his private room?”</p>
<p>“No,” answered Swenton slowly, “he would
go into the spectroscope room, lock that door, and
then you could hear the inner door open and shut.
Sometimes he would not come out again, but I
have often heard him come out into the anteroom
about three or four minutes after he went in, stay
there for a minute or two, then go in again and
come out once more. After that he would be shut
up there for hours together.”</p>
<p>“That settles it,” cried Dorothy. “I’m sure I
know how he opened his secret closet or closets.
You remember the insulated wire covering they
found, when they came in after the doctor’s
death.”</p>
<p>We nodded eagerly.</p>
<p><span class="pagenum"><SPAN name="Page_173">[173]</SPAN></span></p>
<p>“That was the winding of an electro-magnet.
He attached it to the long flexible cord of that incandescent
light socket in the anteroom, took it in,
opened his closets, brought it out again, and went
back. See if you can find an electro-magnet in the
cases or the storeroom, and we’ll open things up.”</p>
<p>Scarcely were the words out of her mouth, before
Swenton had hurried to a drawer, and pulled out
three small electro-magnets, all of the same size.</p>
<p>“Here are the only ones I know of, in the
laboratory,” he exclaimed. “I can connect one of
them with the flexible cord in a minute. We shall
want more light, though. If one of you gentlemen
will get another connector and fix it to a socket,
I’ll fit the magnet. You’ll find some connectors
for that size socket in the storeroom, I’m sure.”</p>
<p>With four practised hands at work, it was scarce
ten minutes before an incandescent stood on the
table in the inner room, while we had an electric
magnet connected to a long flexible cord which
brought current from an incandescent light socket
in the next room. Dorothy stood in the centre,
once more in command.</p>
<p>“I believe it’s under one of those pegs,” she
said. “See what’s under them.”</p>
<p>Round and round the room we went, pulling at
every peg that joined the sealed walls. Under each
was a nail. Tom picked up one of the pegs as we
drew it forth.</p>
<p><span class="pagenum"><SPAN name="Page_174">[174]</SPAN></span></p>
<p>“Humph!” he cried. “Insulated by caema.
That explains why the nails were left. What a
careful job this was, anyway.”</p>
<p>Hamerly and Swenton nodded. I started to ask
what caema was, but I was pulling on a particularly
refractory peg just then and let it go. The
word stuck fast in my memory, however. It was
the same one I had seen in Tom’s book on our
journey up from Portsmouth. As each peg came
out, the little electro-magnet was brought up to
the hole and its action watched. Not a nail stirred.
We had gone around three sides of the room, when
Tom called out, “This peg came easily. Bring over
the magnet.”</p>
<p>Before I could bring the magnet within an inch
of the hole, the nail within sprang out and attached
itself to the magnet, just as a needle springs up and
clings to the horseshoe magnet of a child. As it
sprung, the whole panel, four feet high and three
feet across, opened on easy hinges and swung outward,
showing a small inner door. Tom gave a
long, low whistle. “Right again, sister,” he remarked.
“What should we do without you?”</p>
<p>The stout oak door, strong as it was, proved
no obstacle to our attack, and readily swung
outward. Stooping, we peered within. Empty
shelves on one side. A row of drawers on the
other. One by one we drew the drawers from
their places. Every one was empty. From top<span class="pagenum"><SPAN name="Page_175">[175]</SPAN></span>
to bottom of the recess we searched, but without
avail. Finally we straightened up with blank
faces.</p>
<p>“There must have been something there,” said
Dorothy slowly.</p>
<p>“Hang it,” ejaculated Tom, “I know there
was. If you want to know my real opinion, there
has been somebody here ahead of us. I don’t
believe we’ll find a thing.”</p>
<p>We did not, and the last inspection over, we were
ready to take our leave, when Tom broke in.</p>
<p>“One last thing,” he said; “I want to see how
that incandescent light in the ceiling can be connected
without outside metal. That reflector, by
the way, looks like clear glass, but it must have
some reflecting power.”</p>
<p>He jumped lightly to a chair, thence to the table,
and turned to look through the clear glass of the
big hemispherical shade, which had guarded the
incandescent in the ceiling.</p>
<p>“Oh, I say,” he exclaimed, “here’s a most
extraordinary thing. Everything seen through
this is bent double. Here’s the biggest refraction I
ever saw. Can it be the glass, or something inside
of it? This thing is hermetically sealed above.
Do you know, I believe we’ve got one solution of
the mystery here.”</p>
<p>We all stood looking eagerly up at him, as he
gazed through the globe.</p>
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<p><span class="pagenum"><SPAN name="Page_176">[176]</SPAN></span></p>
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