Reviews—Fossil Manumals from China. 127 
adjustment, if accomplished mainly by movements of igneous magmas, 
would well explain the north to south elongation of the continents. 
Moreover, in this way one can understand the predominance of granitic 
rocks in the lighter continental segments, as compared with the 
suggested paucity or even absence of granitic rocks from the heavier 
oceanic segments, 
In his consideration of the moon, Mr. Jeffreys finds that the period 
of revolution at the time of its consolidation was of the order 6°5 days. 
An important conclusion to which he arrives is that the strains within 
the moon can never have been sufficient to produce permanent set. 
It thus becomes difficult to believe that tidal friction has been 
responsible for the moon’s present attitude towards the earth. In 
the second paper it is shown that the moon’s empirical secular 
acceleration leads to such a value for the plasticity of the earth that 
the Eulerian nutation (responsible for variation of latitude) ought to. 
die down ina few days. One explanation of the obvious discrepancy 
would be that tidal friction is not the main factor now concerned in 
the control of the moon’s secular acceleration. 
It is interesting to notice that none of these investigations prove 
a formerly molten earth, though it is safe to say that with such an 
assumption the present status and behaviour of the earth and moon 
ean be most easily explained. : 
Artuur Hormes. 
TIT.—(1) Ow some Fosstr Mammats From Szn-cuuan, Cutna. (2) On 
some Fosstu Mammats From Honan, Curna. (3) Ow some Fossin 
Mammats From 'l'suxinoxt, Uco. By H. Marsvomoro. Reports of 
the Tohoku Imperial University [2], Geology, vol. ii, No. 1, 1915. 
‘{\HE first of these papers deals with mammalian remains from the 
late Pliocene and early Pleistocene deposits. From the former 
_two species of Stegodon are recognized, together with a Rhinoceros and 
several Bovine animals, one of which is referred to a new genus 
Proboselaphus. From the latter horizon a new form of Hyena, 
H. ultima, and two species of Rhinoceros are described. 
The second paper describes a number of Pleistocene mammals, 
including a large species of Hqwus, regarded as new, two species of 
deer, and a small Bison, referred to a new species under the name 
Bison exiguus. There is also a human sacrum which is said to 
resemble in several respects the sacrum of the Chapelle-aux-Saintes 
man described by Boule. 
The last paper gives an account of a series of mammals from the 
Pleistocene of Japan, including Elephas namadicus and a new species 
of pig, Sus nipponicus, in some respects intermediate between Sus 
tatwanus and S. leucomystax. 
- The above papers, which are published in English, are beautifully 
illustrated by a series of nineteen plates, for the most part unusually 
good photographs, and some text-figures. 
