of Edinburgh, Session 1885 - 86 . 
613 
Huxley. He finds that the bacterium grows to an ovoid body, of 
very delicate nature, which hursts and gradually collapses, scattering 
very minute spores. By continuous observation, he has seen the 
spore grow again into the ovoid body, w T hich was seen to burst 
again as before. Mr Dallinger worked with very high powers, 
x 3000. Similar observations with regard to the life-history of 
bacteria have been made by Professor Gossar Ewart, but he does 
not emphasise the resting stage. Mr P. Geddes points out that this 
occurs in many instances in the cycle of cell-life. 
Table showing the Histological Appearances of the Vaccine 
Organism in Solid and Fluid Media , ( x 700). 
No. 
Medium. 
Material. 
Forms. 
Corresponding Forms. 
1 
Fluid. 
Clear lymph. 
• • 
Burdon Sanderson’s “micro- 
zyme.” Cohn’s spheroidal 
corpuscle. 
2 
yy 
” 
• • 
Cohn’s simple corpuscle or M. 
Yaccinae. 
3 
Solid. 
White in jelly. 
?• > o 
Cohn’s “ pairs of corpuscles.” 
4 
r 
White in agar. 
?• 0° 
Cohn’s “ groups ” or “ clumps. ” 
5 
?? 
Yellow in jelly. 
o® oo 
Cohn’s “ groups resembling 
sarcinae. ” 
6 
yy 
Yellow in agar. 
<9 0 OO 
o 
Cohn’s “ larger aggregations” 
or ‘ £ clumps. ” 
7 
Fluid. 
OpaqUe lymph. 
Burdon Sanderson’s “semifluid 
material” or “oil-drops.” 
Cohn’s “refractive cells re- 
sembling oil-drops. ” 
8 
Solid. 
Orange, 8th day. 
Burdon Sanderson’s “micro- 
zyme.” Cohn’s “minute 
spheroidal corpuscle. ” 
Table showing Appearances of Variolous Organisn in Solid and 
Fluid Media, {after Cohn), ( x 700). 
No. 
Medium. 
Material. 
Forms. 
Corresponding Forms. 
1 
Fluid. 
Clear lymph. 
• *• 
Cohn’s minute sphere. 
2 
>, 
y y 
Cohn’s simple corpuscle. 
3 
Solid. 
White in jelly. 
•• 
Cohn’s pairs of corpuscles. 
4 
yy 
yy 
•• V 
Cohn’s “ groups ” or ‘ ‘ clumps. ” 
5 
Fluid. 
Opaque lymph. 
So o© 
oo oo 
Cohn’s “ groups resembling 
sarcinae.” 
6 
yy 
oo oo 
Cohn’s “ larger aggregations.” 
7 
8 
” 
” 
O o 
Cohn’s “ refractive cells resem- 
bling oil-drops.” 
