THE BACILLUS OF LEPROSY. 
99 
watch-glass ; serum containing blood-corpuscles, here and 
there a white blood-corpuscle ; discovered a few bacteria. 
On teazing a preparation in osmic acid I find many cells, 
which enclose longish rods. 
10th, Nos. 1, 2, and 3. — Present no alterations, except 
that where the longish rods can be seen they are motion- 
less. 
Preparation No. 4. — In many of the cells that have been 
swollen by water are found more or less numerous granules 
of various sizes, showing molecular movement ; in some of 
the cells between the oscillating granules a rod with slower 
movements can be observed, which appears independent of 
the movements of the granules ; in other cells no granules 
are to be found ; on the contrary, many rods and one or two 
of these with slow serpentine movement. 
Preparation No 5. — No alteration, except that the blood- 
corpuscles are more contracted. 
11th. — The preparations are unchanged. 
12th. — The same as 11th, only that the cells have no 
longer anywhere the same uninjured appearance as before ; 
in many the small rods are not to be seen. 
14th. — In No. 1 — 3 the cells are still well preserved. 
The nuclei stand more boldly out than before, more homo- 
geneous. In the dense crowd of cells is found, in many 
places, what appears to be a film over the preparation ; this 
film seems to consist of a finely dotted mass, and also of 
small rods, which cross one another in all directions. In 
No. 2 is found in the serum two small chains of 
monads. In one place in No. 3 a well-defined granulated 
mass, which at the edge shows itself to be a number of 
chains of monads. In No. 4 only a few of the cells are 
preserved in one side of the preparation ; an immense 
number of bacteria right in the middle of the preparation ; 
in several places a mass of immovable rods crowded to- 
gether. It is difficult here to ascertain the nature of these, 
for in many places are found small lumps of stearine crys- 
tals, but the former are found to be much more highly 
refractive and of a more irregular arrangement than the 
stearine crystals. 
18th, Nos. 1 — 3. — The cells have disappeared, best pre- 
served in No. 3 ; the finely granulated fungus mass not par- 
ticularly increased, coloured a strong brown black with 
osmic acid, like the brown bodies. No more chains of 
monads in Nos. 1, 2. 
20th, Nos. 1, 2. — The cells always more fallen away 
and kneaded together in a mass, in which the single cells 
