^Jouma!,rl^^^^^^^ PEOaBESS OF MICROSCOPICAL SCIENCE. 127 
noted at Halle. — (Eeport of interview with Professor De Bary.) In 
several of these preparations some tilletia spores undoubtedly existed, 
but they were always merely lying among the other materials of the 
preparations, and their existence in such preparation might have been 
due to mere accidental entrance into the cultivation. The prepara- 
tions were chiefly derived from cultivations in the large apparatus ; 
therefore, of course, the separate steps in the development were not 
seen to take place. 
3. Preparations illustrative of the tendency of penicillium to form 
dilatations resembling macroconidia. A great number of these pre- 
parations were exhibited, as, in Professor Plallier's opinion, they prove 
the identity of mucor and penicillium, 
4. Eice-plant cultivations. Professor Hallier also showed his 
preparations illustrative of the condition of the rice-plants which he 
cultivated at Jena, watering the soil on which they grew with a 
solution of cholera evacuations. In order to develop the fungi 
affecting them, a portion of the leaf had been placed for some time on 
the surface of a mixture of starch paste with phosphate of ammonia, 
and small portions of the tissue of the leaf detached for observation. 
On examination, the tissue presented more or less globular bodies, 
apparently an exaggeration of spores, as figured in his work termed 
" Phytopathology." In this work Dr. Hallier speaks of the relation 
existing between these bodies and urocystis, judging from their form 
and method of germination. He seems now, however, to have aban- 
doned this view of the relation of these bodies to urocystis ; neverthe- 
less he maintains that they are analogous to cysts found in cholera 
evacuations. Of course, in the absence of further details and of 
personal observations, it would be premature on our part (Ed. M. M. J.) 
to offer anything in the shape of critical comment on Professor 
Hallier's conclusions. But we must say that it strikes us that the 
magnifying powers employed in examinations involving decisions as 
to the development of Bacteria, and which seldom exceeded 250 
diameters, were singularly low. — See The Lancet, Jan. 2nd, 9th, and 
16th. 
The Structure of Cartilage. — A paper has been read before the 
Vienna Academy of Science by Herr Bubnoff on this subject. He 
has found in the costal and articular cartilages both of man and other 
animals, that there exist singular ramifications of arteries, accom- 
panied by veins, and he states that in some instances— illustrating as 
it were Reichert's law — that the cartilage cells can be traced into 
the muscular structure. The vessels are enclosed in special canals, 
lined with a layer of connective tissue. The articular cartilages are 
provided with a perichondrium, whose vessels penetrate into their 
substance. The action of hyperosmic acid reveals a complex net- 
work of canals, passing in all directions through the cartilage, and 
communicating with the lacunae enclosing the cartilage cells — the so- 
called cells + the cartilage corpuscle. — Vide Sitszungsher. d. K. AJcad. 
d. Wissen. LVII. Band IV. Heft. 
The Stroma of the Ovary in Mammals has been examined by Herr 
Winiwarter, who, in a paper published in the Proceedings of the 
