366 Reviews—Dr. R. F. Scharff’s European Animails. 
essentials (except im bearing leucite) with the kenyites of Mount 
Kenya,’ and belong to the family of trachy-dolerites. The phenocrysts 
consist of anorthoclase, olivine, nepheline, hatiyne (scarce), magnetite, 
apatite, ilmenite, and zircon, and the groundmass, often more or less 
glassy, contains anorthoclase, olivine, nepheline, leucite, diopside, 
egirine, girine-augite, lavenite (?), anomite, cossyrite (scarce), 
catophoritic hornblende. As secondary minerals, pseudobrookite, 
analcite, and other zeolites, calcite, and hyalite occur. According as 
nepheline or leucite predominates the rocks may be divided into 
Nepheline-rhomb-porphyries and Leucite-rhomb-porphyries. 
Dr. W. Wahl (Helsingfors, Finland), ‘‘On a Magnesium-diopside- 
bearing Diabase from Kiillsholm, Skargard (skerry well) of Foglo, 
Aland “Islands, ” describes a diabase containing a magnesium-diopside 
chemically very similar to that in the diabase of Richmond, Cape | 
Colony, and the mixture of pyroxenes in the Hunne diabase of 
Halleberg (at the south end of Lake Vener in Sweden). The rock 
chemically resembles the olivine-diabase of Rhosson, near St. Davids,? 
and the Whin Sill® of Cauldron Snout. 
Dr. Wahl’s paper is the last in the volume, but owing to a mistake 
of the post-office a paper by Mr. A. C. Lane (State Geologist), of 
Lansing, Michigan, arrived too late for inclusion. It is entitled 
“Die Korngrésse der Auvergnosen”’ (the size of gram of the 
auvergnoses), and deals with the practical and theoretical conclusions 
which may be drawn from the microscopical study of the size of the 
constituents of igneous rocks, especially the quartz-diabase of the 
Medford dyke near Harvard University. The paper is published by 
Schweizerbart, Stuttgart, in the same style as the Festschrift. 
B. Hoxson. 
III.—Evropray Anmmats : THEIR GroLogicat Hisrory AND GEOGRAPHICAL 
Distrrpution. By R. F. Scuarrr, Ph.D., B.Sc., Swiney Lecturer 
on Geology. 8vo; pp. xiv and 258, with 70 illustrations. 
(London: Archibald Constable & Co., Ltd., 1907. 7s. 6d. net.) 
f¥\HE most appropriate motto for the present volume would have 
been the author’s own words quoted below, with the last 
sentence in italics, as we print it. ‘‘ Our fossil evidence is of so very 
fragmentary a character that it is often extremely difficult to point to 
any particular country as the home of a species or genus. The present 
distribution, however, may be looked upon as a reliable guide in directing 
our inguiries im this respect.” 
On the other band, it would seem to us rather that ‘‘ The present 
distribution must be looked upon frequently as a fallacious guide im 
directing our inquiries concerning the home of a species or genus.” 
Herein hes the one grievance we have with the contents of this 
otherwise excellent book. There is also in our opinion too much 
prominence given to migration, to marches and countermarches; and 
we must further disagree with the author where he assumes an 
extraordinary longevity of Mammalian species. 
1G. T. Prior: Min. Mag., vol. xiii (19038), p. 247. 
2 See A. Geikie :. Quart. Journ. Geol. Soc., 1883, p. 303. 
3 Teall: Quart. Journ. Geol. Soc., 1884, p. 654. 
