:08:02
Dust, Mrs. Hudson,
is an essential part...
:08:04
of my filing system.
:08:06
By the thickness of it...
:08:07
l can date any document
immediately.
:08:09
Well, some of the dust
was this thick.
:08:12
That would be...
:08:14
March 1883.
:08:40
Oh! How can you stand this?
:08:44
Why don't you let me
air the room out?
:08:46
Please, Mrs. Hudson,
he's working on...
:08:49
a definitive study
of tobacco ash.
:08:51
Oh, l'm sure there's
a crying need for that.
:08:53
ln our endeavors,
it is sometimes vital...
:08:56
to distinguish
between, say, the ashes...
:08:58
of a Macedonian cigarette
and a Jamaican cigar.
:09:01
So far he has classified
140 different kinds of ashes.
:09:05
All of which will
wind up on my rug.
:09:08
That will be enough,
Mrs. Hudson.
:09:12
All right...
:09:14
if you gentlemen want
to stay and suffocate.
:09:25
She's right. l am suffocating.
:09:27
Oh, let me open the window.
:09:28
Not from lack of air.
From lack of activity.
:09:31
Sitting here, week after week,
blowing smoke rings...
:09:34
staring through a microscope--
there's no challenge in that.
:09:37
Personally, l consider it
a major contribution...
:09:40
to scientific criminology.
:09:42
How l envy you
your mind, Watson.
:09:44
You do?
:09:45
lt's placid,
imperturbable, prosaic.
:09:48
But my mind rebels
against stagnation.
:09:51
lt's like a racing engine
tearing itself to pieces...
:09:54
because it's not connected up...
:09:56
with the work
for which it was built.