QUARTERLY CHRONICLE OF MICROSCOPICAL 

 SCIENCE. 



KoUiker's and Siebold's Zeitschrift far Wissencli. Zoologie. 

 Part II, 1868. 



1. "A Contribution to the Knowledge of the Tcenice," by 

 Johannes Feuereisen, of Dorpal. One plate, forty-five pages. 



2. "Anatomy of the Bed-bug (Cimes lectularius, L.), by 

 Dr. Leonard Landois, of Greifswald. — This is a detailed 

 memoir of nineteen pages, illustrated by two plates, and is a 

 worthy successor to the author's treatises on the anatomy of 

 the Pediculi infesting the human species. The various glands 

 of the insect — salivary, Malpighian, and stink-glands — are 

 carefully described and figured. Dr. Landois has examined 

 especially the secretion of the last. He finds that it crystal- 

 lizes from an ethereal solution in colourless prisms, and has 

 a powerfully acid reaction. Its chemical formula appears to 

 be C3QH28O4. The name Cimicin acid is given to this body. 



3. " On the Tunics which surround the Yelk of the Bird^s 

 Egg," by W. von Nathusius, of Konigsborn. — This is a 

 memoir of forty-six pages, illustrated by five large plates, and 

 worthy of more detailed notice than we can now give to it. 



4. " On the Genus Cynthia as a Sexual Form of the Mysidian 

 Genus Siriella/^ by Prof. Dr. C. Claus. Four pages, one plate. 



5. " On the Snake-like Amphibians {Gcecilia) ; a Contribu- 

 tion to the Anatomical Knowledge of the Amphibia," by Prof. 

 Leydig, of Tubingen. Eighteen pages, two plates. 



6. " On Deposits of Tyrosin on Animal Organs," by Carl. 

 Voit. — This notice, as explanatory of an appearance not un- 

 frequently met with in ill-preserved preparations of animal 

 tissues, is of some interest, amongst others, to the micro- 

 scopist. 



Some years since specimens of fish which had been kept 

 in weak spirit were sent to Herr Voit to determine the nature 

 of a peculiar deposit upon the surface of the scales, which 

 was so copious as entirely to destroy the value of the speci- 

 mens. 



