ZOOLOftY AND BOTANY, MICROSCOPY, ETC. 
573 
tlie clinical aspect and the microscopical appearances resemble those of 
Trichophyta of animal origin, while pure cultures present the morpho- 
logical characters and the biological affinities of Achoria. He there- 
fore concluded that there exists a group of parasites intermediate be- 
tween the Trichophyta and Achoria. 
This intermediate group also includes, — (1) Mucedineee, the myco- 
logical characters of which are those of Achorion, while their clinical 
aspect resembles that of certain Trichophyta ; and (2) parasites which 
are Trichophyta morphologically and biologically, but which produce 
favus lesions. 
Trichophyton producing Herpes on the Horse.*— MM. Matruchot 
and Dassonville describe a new Trichophyton which infested the horses 
and men of an artillery regiment. The fungus was easily cultivated on 
Sabouraud’s medium, on carrot and on potato. The cultures showed a 
mycele 2—8 /x broad, relatively rarely septate, and frequently branched 
at right angles. Oval spores, 3-4 a by 2-3 y, are formed by the side 
of joints, and, besides these lateral spores, chlamydospores (3-10 /x by 
2 • 8 y) are also produced. Examination of the hairs showed numerous 
oval spores (4-6 y by 2—4 /x), and also mycele. The authors consider the 
fungus should be classed among the Ascomycetes of the group Gymno- 
ascaceee. The cultures were successfully inoculated on man and guinea- 
pigs. 
Pseudo-Lupus Vulgaris caused by a Blastomyces.f — Mr. T. C. 
Gilchrist and Dr. W. R. Stokes record a case, the clinical aspect of 
which simulated the appearance of lupus vulgaris (tuberculosis of the 
skin). In sections from the cutaneous lesions, almost typical tubercles 
were found, and these were associated with the presence of apparently 
budding Blastomycetes. These organisms were chiefly spherical uni- 
cellular bodies, varying from 10-20 /x in diameter, were inclosed in a 
doubly contoured membrane with finely granular protoplnsmic contents, 
and sometimes contained a vacuole. No nucleus was discovered. There 
were many budding forms, but no mycele or hvphae. 
Pure cultures were easily obtained on the ordinary media. These 
exhibited budding forms and a fairly profuse mycele. 
Dogs, guinea-pigs, a horse, and a sheep, were successfully inoculated. 
In the lungs were found nodules, sometimes of considerable size, resem- 
bling cancerous deposits. 
Microscopically these nodules were found to be of a chronic inflam- 
matory nature, and they contained the parasites. 
As the organism did not ferment sugar, and produced a mycele in 
cultures, it may belong to the Blastomycetes or to the Oidia : but in 
conformity with the present nomenclature the authors have designated 
it Blastomyces dermatitidis. 
Protophyta. 
a. Schizopliycese. 
Culture-forms of Diatoms, t — In pure cultures of diatoms in water 
containing a little straw and clover, Herr J. Burger obtained specimens 
* Comptes Rendus, cxxvii. (1898) pp. 279-81. 
f Journ. Exper. Med., iii. (1898) pp. 58-78 (5 pis.), 
t Zeitechr. f. angew. Mikroscopie, iv. (1898) pp. 61-2. 
