QUARTERLY CHRONICLE OF MICROSCOPICAL 
SCIENCE. 
GERMANY.—We fear that our anticipations expressed 
in the last Chronicle have proved too true. We have not 
received any number of the ‘ Zeitschrift,’ or of Max Schultze’s 
‘Archiv,’ since last May, and can only conclude that the 
excitement and pressure caused by the late war have delayed 
their publication. 
Muller’s Archiv. July.—The following microscopical papers 
occur in this number :— Microscopical Researches on the 
Texture, Development, &c., of Fatty Tissue,” by Herr Czjawicz. 
“ On the Black Pigment of the Lung and the Iung Cuticle,” 
by Herr Mettenheimer. ‘“ On the Trachee of Tenebrio mo- 
litor (Meal worm),”’ by Drs. Landois and Thelen. ‘ On Spiral 
Bundles in the Sympathetic of the Frog,’ by Dr. J. Sander. 
“ On the Typical Structure of the Echinodermata,’ by Dr. 
Dornitz. 
FRANCE.—Comptes Rendus.—“ On the Reproduction and 
Embryogeny of the Aphides,’’ is the title of a paper lately laid 
before the Academy by M. le Dr. Balbiani. The author 
remarks that, “ according to the ideas which observers have 
formed of the nature of the reproductive organs of these 
insects, their multiplication has been referred sometimes to 
the phenomenon of alternate generations, sometimes to those 
of parthenogenesis. As regards the opinion which assumes 
an androgynous condition in these animals, and is still main- 
tained by some authors, as well as by Leeuwenhoek, Cestoni, 
and Réaumur, it rests upon a mere hypothesis which has not 
yet received its demonstration by the detection of the male 
element in the viviparous Aphides.” It is this last view which 
M. Balbiani defends in his paper, by adducing observations 
which he considers afford the positive proof for which science 
