5 
waiting for the arrival of the disease, have had more time to 
prepare themselves. 
The mycological investigation resulted in the growth of a 
fungus, the anaerophytic and aerophytic forms of which are 
given in the accompanying engravings. Experiments to 
convert this fungus, under changed circumstances, into others 
representing other families, were unsuccessful, the cells failing 
to develop. 
The only thing accomplished, was a slight variation in 
growth, the more or less vigorous development correspond- 
ing to the richness in nourishing substances, of the objects 
upon which the fungus was grown. 
The same fungus was obtained from the blood and the 
urine of three different horses; whether its presence, however, 
was cause or consequence of the disease, I will not venture 
to decide. 
Dr. CuHarLes Am ENpg, of Hoboken, N. J., on the invita- 
tion of the President, made the following remarks : 
After the full and valuable statements of my friend, Dr. En- 
demann, but little remains for me to say: this, however, bears 
mainly on the botanical investigations, and on some general 
physiological deductions. 
The material for my examinations was collected, with all 
necessary precautions, from several sick horses in different 
stables in and around the city. It consisted of the discharges 
running from the nostrils of the horses; and these were kept 
and examined separately. 
In addition to more or less decomposed cells of various 
membranes, all the discharges contained a great abundance 
of minute globules, finely dotted, varying in size from + to 
roo, Of a millimeter. These globules are apparently organized 
bodies, cells, belonging to the series of forms of some fungus, 
probably allied to Uredo, growing upon certain grasses or 
leaves. For some time, I was doubtful as to their nature ; 
but from the results of cultivation in several experiments, 
and from the process of development as therein observed, I 
came to this conclusion. 
These cells (“spores”) are covered, when young, by a 
cuticle, which becomes nearly or wholly re-absorbed where 
they grow under certain conditions. 
In cultivation, the cuticle remains well distinguishable, 
and the development of micrococcus within it is less luxu- 
riant. The richness of the food offered to the fungi, on the 
