THE GENERAL SUBJECT. Mamm . 15 
described as Stagodon and Ilatacodon are considered to be Reptilian or 
Ichthyopsidan. It is shown that the Stereo gnathidcc differ from the 
other Multiluberculata in having two rows of tubercles in the upper and 
three in the iower molars, instead of the reverse arrangement. In Am. 
Nat. t. c. pp. 775-785, the author replies to an answer by Marsh (supra, 
p. 12) on those criticisms. 
Packard, A. S. The Labrador Coast. New York : 1891, 513 pp., 
illustrated. 
Contains notices of the Seal-fishing, the Walrus, Polar Bear, and other 
Mammals ; and has also a complete list of the Mammalian fauha. 
Paterson, A. M. The Development of the Sympathetic Nervous 
System in Mammals. P. R. S. xlviii, pp. 19-23 (Abstract). 
The author concludes that the Mammalian sympathetic system is meso- 
blastic, and formed in situ out of the cellular tissue surrounding the 
embryonic aorta, and is at first independent of the cerebro-spinal system. 
Later on it becomes connected with the latter by means of growths from 
certain of the spinal nerves of white rami communicantes, and in con- 
sequence become gangliated in an irregular manner. From the main 
cord cellular outgrowths arise, which form peripheral, non-medullated 
nerves, plexuses, and ganglia, as well as the medullary portions of the 
supra-renal bodies. Morphologically the sympathetic system resembles 
the structures with which it is in contact in being mesoblastic, and 
primarily unsegmented. 
Pavlow, M. [See p. 40, Equidce .] 
Piana, G. P. [See p. 41, Artiodactyla..’] . 
Poiilig, H. (i) Ueber neue Ausgrabungeti von Taubach, bei Weimar, 
(u) Ueber Petersburger fossilo Saugethiorreste. (hi) Ueber Ameri- 
kanische Proboscidierreste. SB. niederrhein. Ges. 1891, pp. 38-42. 
In the first communication remains of Elephas dntiquus and Rhinoceros 
mercki are recorded from Weimir. In the second we have a record of 
various Mammals from Siberia, among which are an entire skeleton of 
Elasm other ium, a new type of Canidce, Bison prisons, and Ovibos moscha- 
tus. Milk -tusks of Mammoth are also recorded. The third section 
chiefly relates to Cope’s generic nomenclature of the Proboscidea. 
. [See also p. 21, Simiidce, and p. 43, Antilocapridce.~\ 
. Die Grossen Saugethiere der Diluvialzeit. In Marshall’s Zoo- 
logische Vortrage : Part 5, 64 pp. (1890). 
A popular account of the giant Mammals of the Pleistocene. 
Pouchet, G. [See p. 48, Physeteridce.'] 
Prenant, A. Annotations sur le Developpement du Tube Digestif chez 
les Mammiferes. J. de 1’Anat. Phys. xxvii, pp. 197-233, pis. xi-xiv. 
Priem, F. L’Evolutiou der Formes Animales, avant l’Apparition de 
l’Homme. Paris : 1891, 12mo, 384 pp., illustrated. 
The Mammalia occupy pp. 319-384. 
