246 American Quarterly Microscopical Journal. 



AMINATION OF Yeast POPULARLY EXPLAINED. — From London 

 Brewer's Journal. Outlines of a Process for the Examina- 

 tion OF Urine for Medical Purposes. — Arranged by R. Hitch- 

 cock. On Biotite as a Pseudomorph after Olivine. — Prof. 

 A. A. Julien. This paper, apart from the value of the facts it relates, 

 is important as showing the great practical value of the microscope in 

 the study of rocks, and the alterations they have undergone. Micro- 

 scopical lithology is fast becoming recognized as an important study. 

 Recent Progress in the Study of the Lower Cryptogams. — 

 Abstract of Sir Joseph Hooker's address before the Royal Society, 



published in Nature. 



yanuary, 1879. 

 Structure of Colored Blood Corpuscles. — Dr. Elsberg. — Ab- 

 stract of a paper read before the New York Academy of Sciences. 

 Artificial Crystals of Gold and Silver. — Albert H. Chester. — 

 Prof. Chester has been working upon this subject for a long time, and 

 his contribution is quite interesting, giving some processes for making 

 the crystals and describing their several forms. Trichina in Pork, 

 — The results of experiments of Dr. Belfield and Mr. Atwood, of 

 Chicago, referred to in our last issue. The Microscope in Medical 

 Jurisprudence. — H. C. Hyde. — Read before the San Francisco 

 Microscopical Society. Notes on Diatomace^ from Santa Mon- 

 ica, California. — Charles Stodder. — This deposit contains several 

 quite rare and beautiful forms of diatoms, which are briefly noticed. 

 The paper was read before the San Francisco Microscopical Society. 

 Microscopic Soirees — An Improved Method of Exhibiting 

 Objects.— George E. Fell. A New Form of Collecting Cane. 

 Microscopic Pond Life. — Paper read by Mr. T. S. Wilkins, before 

 the North Staffordshire Naturalists' Field Club, England. A New 

 Rotifer. — D. S. Kellicott. — This is a rotifer well known to all who 

 have examined the water of Lake Erie, and we are sure it is not 

 uncommon in Lake Michigan. Although now described as a new 

 species, it has been familiar to observers for at least ten years. It is 

 named Anurcea lotigispina, and a full description, accompanied with a 

 wood cut, is given. VOLVOX Globator. — From Young Scientist. 



BULLETIN DE LA SOCIETE BELGE DE MICROSCOPIE, 



Sdancc, Noiicinher 28///. 



Mr. Renard gave some results of his microscopical examinations of 

 thin sections of fulgerite, and of some products of the fusion of 

 quartzose minerals, and compared the results with the products of 

 artificial fusion. In a second note Mr. Renard described the meteorite 

 of Tourinnes-la-Grosse. The President, Mr. Ledeganck, presented a 

 communication relative to some matters in ophthalmology. A 

 plate accompanies this. Mr. F. Kitton contributes Notes on some 

 Diatoms, which is also illustrated. 



Chesapeake Zoological Laboratory. Scientific Results of 



