120 
BIBLIOaRAPHY. 
t Monthly Microscopical 
Journal, Aug. 1, 1869. 
branched, and in others the offshoot became still further branched, as 
in pinion feathers, where the original branches had curved branchlets 
which intertwined with each other so as to prevent their separation. 
In others the simple hair became forked like the letter Y, and the 
space between the branches became filled up to form a scale. In the 
hair of mammalia there were three parts to be noticed — an outer 
scaly covering (a continuation of the epidermis), a fibrous material 
growing from a special matrix, and somewhat analogous to nails and 
hoofs, and a central cellular growth. 
(To be continued.') 
BIBLIOGRAPHY. 
Zur nahern Keuntniss d. Proventriculus und der Appendices ven- 
triculares bei den Grillen und Laubheuschrecken von Herrn Dr. von 
Graber. Wien. Gerold's Sohn. 
Beitrage zur Entwicklungs-geschichte der Pflanzenorgane, von 
Herrn H. Leitgeb. Wien. Gerold's Sohn. 
Bryozoi pliccenici italiani, von Dr. A. Manzoni. Wien. Gerold's 
Sohn. 
Cryptogamen-Herbarium der thuringen'schen Staaten von Herrn 
W. O. Miiller. Gera Griesbach. 
Die Hirnwindungen des Menschen, etc., von Herrn Prof. Alex. 
Ecker. Braunschweig. Yieweg & Sohn. 
Mikroskopische Untersuchungen der Yesuv-laven vom Jahre, 1868. 
Yon Herrn F. Kreutz. Y^ien. Gerold's Sohn. 
L'Ecrevisse, moeurs, reproduction, education ; par M. P. Carbon- 
nier. Paris. Lachaud. 
Etude sur un parasite de la chenille du Liparis disjtar ; par M. 
Charault. Le Mans. Monnoyer. 
Nouvelles considerations sur les maladies des vers-a-soie, et sur les 
epidemics en general ; par M. E. Le Moyne. Marseille. Arnaud. 
Note pour servir a la faune de la Gironde, contenant la liste des 
animaux marins, dont la presence a Arcachon a ete constatee pendant 
les annees 1867 et 1868 : par M. A. Lafont. Bordeaux. Degreteau. 
Eapport sur I'ostreiculture a Arcachon, Hayling, et Trieste ; par 
M. le docteur Soubeiran. Paris. Yictor Masson. 
