QUARTERLY CHRONICLE OF MICROSCOPICAL 
SCIENCE. 
GERMANY.—Kolliker’s und Siebold’s Zeitschrift.—The 
microscopical papers in this number of the ‘ Zeitschrift’ 
(issued in May) are as follows: 
“ On the Auditory Organ of Locusta,’ by V. Hensen.—The 
nerve, trachea, and modified cuticula of the leg forming the 
auditory organ in Locusta viridissima, are minutely described. 
The termination of the nerve presents a very peculiar struc- 
ture, which is figured with other parts of the organ in a beau- 
tifully executed plate. 
“A Contribution to the Knowledge of the Gall-ducts in the 
Liver of Mammalta,” by G. Irminger and H. Frey.—The au- 
thors have made researches on the distribution and arrange- 
ment of these canals by means of injections in the liver of the 
dog, guinea-pig, cat, and pig. The views of MacGillavry and 
Beale are briefly discussed. 
“On the Lymph-follicles of the Conjunctiva,’ by C. Hu- 
guenin and H. Frey. 
“On the Histology of the Muscular Stomach of Birds,” by 
Heinrich Curschmann. 
“On the Development of Myzostomum,”’ by Elias Mecznikow. 
Semper, Schultze, and Schmidt have already studied the very 
curious genus Myzostomum ; but the conclusions they have 
arrived at with regard to its position in the animal kingdom 
are so far unsatisfactory that one considers them as belong- 
ing to the Trematoda, and others place them among the 
Arthropods. Herr Mecznikow, after carefully describing the 
development of M. cirriferum, compares it with various An- 
nelida in incomplete stages of development, and is inclined to 
consider it as the representative of a new group of Chetopoda, 
to be called Chetopoda ectoparasita. 
“On the Natural History of Caprella,’ by Dr. Anton 
Dohrn.—A complete account of this interesting little crusta- 
