Die Parasiten der Infectionskrankheiten. rt 
If you can send to me bile and blood of the infected cattle, 
I hope I shall be able to find out the origin of the cryptococci 
or micrococci. 
Ich lasse nun den folgenden Brief an Herrn Professor Harris 
unverändert folgen, wie er ihn (a. a. O. Seite 311) veröffentlicht hat. 
Jena, December 5. 1868. 
To Elisha Harris, M. D., etc. ete. 
Sir — I am very greatly indebted to you for sending to 
me:&a vial filled with bile of the infected cattle. I received it 
safely on the 22. of last month. I immediately examined the con- 
tents of the vial, and found two different kinds of vegetable cells. 
1) Micrococcus (of some kind of fungus) in large masses, 
many of them single and globular (a), others single and long sha- 
ped (b), forming mycothrix chains (Mycothrix - Ketten), others in 
a state of division (ce), and sometimes forming large or small co- 
lonies (d), (Micrococcus-Colonieen). 
2) Cells of much larger dimensions, and of the shape of cry- 
ptococcus, or rather, intermediate between cryptococcus and ar- 
thrococcus, most of them sprouting like true cryptococcus, but so- 
metimes dividing and forming two equal limbs. 
After this examination, I began a series of cultivations with 
the vegetable (micrococcus) cells. 
1) Cultivation upon an object glass (without a covering glass). 
The food provided for the fungus was composed of boiling spring 
water, a portion of sugar”) and an equal portion of phosphate of 
ammonium (phosphorsaures Ammoniak). The object glass was put 
into a culture apparatus (Hallier, Gährungserscheinungen p. 13 
fig. 3). In this apparatus m my room, at a temperature of 20° 
centigrade, the micrococcus was in rapid augmentation on the 24. 
of November **). 
The micrococci were swelling and forming the larger erypto- 
coccus-like cells. In the first days of December, many of the lar- 
ger cells germinated and formed long filaments with many bran- 
ches, and of a brownish color. 
Similar results I have obtained in other cultivations. 
2) Cultivation on a lemon (deprived of its shell) in a simi- 
lar apparatus... 
 *) Stärkezucker (Anm. d. Verf.). 
**) The second day after Prof. Hallier’s reception of this specimen 
from New-York. 
