1134 General Notes. 
oped respectively from the sources mentioned above, Olfactory 
ganglion, mesocephalic, trigeminus, facial, auditory, glossopharyn- 
gens, and vagus complex.” In a foot-note it is stated, “I hope 
soon to show that the end-organs of taste arise from such thicken- 
ings [of the sensory epithelium] which have wandered through 
certain gill-clefts into the buccal cavity ” (Anat. Anz., p. 879). 
A NEW ATLAS oF EmpryroLocy.—Nothing to compare with the 
splendid atlases of Coste on Comparative Embryology, and of His 
on the human embryo, has yet been published on the Chick. This 
desideratum will be met by the Atlas d’ Embryologie, by Mathias 
Duval, just anuounced by G. Masson, Paris. The author has done 
wisely in keeping it in quarto form, and with forty plates, embrac- 
ing 652 figures, it will cover the history of bird development very 
fairly.. The first plate gives views of the egg in the ovary and | 
oviduct, and the chick in the egg nearly ready to hatch, in short, 
a “vue d’ensemble de sujèt.” The next two plates are devot 
to the structure of the egg, segmentation and formation of the 
blastoderm. Plates IV. to X. show surface views of the blasto- 
derm and embryo at successive stages. Plates XI. to XL. are 
devoted to representing sections of the successive stages shown 
entire on Plates IV. to X. Facts only are presented, theoretical 
considerations being left to the student after he has mastered the 
data. The whole is provided with a copious index, and also con- 
tains an account of the necessary embryological technique involved 
in a study of the developmeut of the chick. The reviewer pre- 
dicts that Professor Duval’s work will be welcomed by teachers as 
a very useful help in the practical study of the subject in the 
laboratory. The book will be useful for reference to supplement 
_ other manuals, and, as it seems to the writer, a thorough knowl- 
edge of the embryology of the chick will best serve as an intro- 
duction to the wider field of comparative embryology. The appear- 
ance of this atlas is timely, for it is probable that eventually 
embryology will have to be taught in order to enable the begin- 
ner in morphology to understand the significance and relative 
importance of the data of advanced morphology in general. 
In taking a survey of the field of embryology, as covered by the 
existing literature, one is struck by the fact that, in spite of the 
great activity of the individual workers, but few really exhaustive 
monographs provided with adequate atlases are in existence. Such 
beautiful embryological monographs as Goette’s on Bombinator, of 
Reichenbach on the Cray-fish, are lasting contributions to science ; 
the works of Selenka and Whitman, too, and, amongst the produc- as 
tions of the older workers, the great monographs of Von Baet, 
Rathke and Bischoff, must ever command admiration. Complete 
