4 
MAMMALIA/ 
/3. Anatomy and Physiology. 
CyoN, E. Ueber den Nervus depressor beim Pferde. Bull. 
Acad. Sc. St. Petersb. xv. 1871^ pp. 261-263, with a plate. 
Flower, W. H. Notes on the first or milk- dentition of 
the Mammalia. Trans. Odontol. Soc. hi. 1871, pp. 211- 
232. 
In this treatise the author has collected the scanty information 
we possess at present on the milk- dentition of Mammals, and 
draws attention to the importance and interest of a closer study 
of this subject. The hinder milk-teeth are usually more com- 
plex than the teeth of which they are the predecessors in the 
permanent series, and represent functionally, not their imme- 
diate successors, but those more posterior permanent teeth which 
have no direct predecessors. Among Mesozoic Mammals there is 
scarcely any evidence of a successive dentition. If a succession 
took place [Triconodony Triacanthodon) j it was only in that par- 
ticular tooth to which it is limited in modern Marsupials ; and 
it would appear probable that in the transition from the lower 
vertebrate to the mammal, by whatever process it took place, the 
indefinite repetition of the former was lost, and' that a mono- 
phyodont dentition supervened, while the peculiar definite di- 
phyodont mode of succession is a superadded and special mam- 
malian characteristic. 
— — . On the composition of the carpus of the Dog. J. 
Anat. & Physiol. 1871, pp. 62-64, with woodcut. 
. On the connexion of the hyoid arch with the cranium. 
Rep. Brit. Assoc. (1870) 1871, Trans, pp. 136, 137. 
Foot, A. W. On goitre in animals. P. Dubl. Soc. vi. pp. 
24-32. 
Galton, F. Experiments in Pangenesis, by breeding from 
Rabbits of a pure variety, into whose circulation blood taken 
from other varieties had previously been largely transfused. 
Proc. Roy. Soc. 1871, pp. 393-409. 
Garner, R. Comparison of the thoracic and pelvic limbs 
in Mammalia. Rep. Brit. Assoc. (1870) 1871, Trans, 
pp. 137-139. 
Hilgard, T. C. Numeric relations of the Vertebrate system. 
Amer. Nat. 1871, v. pp. 559-561. 
Mivart, St. G. On the Vertebrate skeleton. Trans. Linn. 
Soc. 1871, xxvii. pp. 369-392, pi. 53. 
In this paper the author has examined principally the follow- 
ing questions : — 
