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Rh PHYSIOLOGY, ETC. 345

Coste. — Histoire generate et particuliere du developpement des corps

organises. Tome ii. 4e fasc. 12 plates. 4to. Paris. Eheenbebg. — Ueber eine secundare rothe Earbung des thierischen

Eettes. Berl. Mon. 1859. Pick, A. — Compendium der Physiologic d. Menschen mit Einschluss

der Entwickeliingsgeschichte. Engravings. 8vo. Yien. 1860. Filippi, E. i>e — Zur Kenntniss d. Botterkorperchen d. Eische. 23 fig.

Zeitschr. W. Z. x. i. Koellie^r, A. — Entwickelungsgeschichte des Menschen u. d. hoheren

Thiere. Part 1. 94 woodcuts (to be completed in 2 parts). 8vo.

Leipz. Ogilyie, Gr. — On the Grenetic Cycle in Organic Nature. Rep. Brit.

Ass. 1859. Trans. Sect. p. 172.

Since published under the title of : " The Grenetic Cycle in

Organic Nature ; or the succession of forms in the propagation of

Plants and Animals." 8vo. Aberdeen, Edinb. and London, 1861. Reichebt. — Beitrage zur Entwickelungsgeschichte des Meerschwein-

chens. Berl. Mon. 1860. Seebes, E. — Principes d'Embryogenie, de Zoogenie et de Teratogenic.

25 plates. 4to. Paris. Deuxieme Note sur le developpement des premieres rudi-

mens de 1' embryo. Absence des rudiments de la corde dorsale dans

le premier jour de la formation. Viduite primitive de la ligne

secondaire. C. E. LI. p. 337, 476. The author concludes :

1. That the chorda dorsalis does not exist in the first and half of the second days of the formation of the embryo of birds.

2. That the " secondary line" which has been personified under that name, represents a free interval lying between the internal borders of the primitive folds ; the line being inflected with the folds in the formation of the cephalic hood.

3. That this secondary line, or the interval of the primitive folds, should not be regarded as the rudiment of any body what- ever, since light traverses it readily when viewed under the Microscope.

4. It follows, therefore, that if the chorda dorsalis does not exist in the first day of the formation of the embryo, it is not, nor can he, the axis around which the primitive parts of the foetus are subsequently formed.

Troisieme Note sur le developpement des premieres rudimens

de l'embryon. Formation primitive de l'axe cerebro-spmal du systeme nerveux. Comp. rend. LI. p. 581.

6. Organs of Motion and Support.

Bones, Muscles, Cartilage, Sfc.

Aeby, Ch. — Ueber die Eortpflanzungsgeschwindigkeit der Muskel- zuckung. Vorlaufige Mittheilung. Arch. Anat. 1860, p. 25.