JUNE 7, 1912] 
there are in the jaws and of what kind they 
are, in recent forms and in a good many 
fossil forms, he will most likely find here a 
careful statement of the facts, which is after 
all the professed purpose of the book. Certain 
it is, however, that such odontographical in- 
formation is merely the beginning and not 
the end of odontology, conceived as a division 
of comparative anatomy. 
Witiiam K. Grecory 
Modern Industrial Chemistry. From the 
German of H. Buijicuer. Translation by 
J. P. Minuineron, M.A. (Cantab.), B.Sc. 
(Wales), formerly Scholar of Christ’s Col- 
lege, Cambridge. The Gresham Publishing 
Co., 34 and 35 Southampton St., Strand, 
London. 1911. 
According to the publisher’s note, this vol- 
ume is put forward as a standard work, now 
for the first time issued in an English trans- 
lation, designed to cover the whole range 
of subjects with which the chemist and manu- 
facturer are usually concerned. It is not in- 
tended as a text-book, but to occupy a position 
between the text-book and the lexicon. It is 
arranged in strictly alphabetical order and 
should therefore be regarded as a dictionary 
of chemistry. 
It is conveniently issued in a single volume 
of 780 pages. With the exception of the con- 
venience of having a compendium of this sort 
issued in a single volume, it is difficult to see 
in what respect this work presents any advan- 
tages over the standard dictionaries of chem- 
istry such as those of Thorpe and Watts. It 
certainly can not be called up-to-date. Many 
of the leading industrial processes and prod- 
ucts are not well handled, especially from the 
standpoint of American industry. The treat- 
ment of the chapter on industrial alcohol, for 
instance, is not in accordance with the best 
modern information, and the same may be 
said of the article on sugar manufacture. 
Under the descriptions of asphalts, petroleums, 
tars, etc., many of the statements seem arbi- 
trary and misleading from the standpoint of 
American technology. The translator has 
evidently found considerable difficulty in find- 
SCIENCE 
905 
ing synonyms for German technical names 
and phrases. The properties of both asphalts 
and tars, as related to their residual products, 
now so much used for paving purposes, are 
inadequately treated, and unimportant pat- 
ented preparations seem to be given too much 
prominence. Water gas tars, for which con- 
siderable uses have been found, are not men- 
tioned in the volume. 
Under pigments and oils, we find a very fair 
but brief description of the various dry colors, 
mineral and artificial, as well as pigments 
used in the manufacture of paints. The treat- 
ment of the manufacture of white lead is, how- 
ever, very old, and does not include any men- 
tion of the new processes now in use both in 
America and abroad, such, for instance, as the 
Rowley or the Picher processes. All of the 
more common oils and thinners for paints are 
briefly described, and considerable matter con- 
cerning the manufacture of varnishes is in- 
cluded. The newer paint oils which have 
come into prominence of late years are not 
mentioned. 
Metallurgical processes are described only 
briefly, and for the most part the descriptions 
do not adhere to the usual or best practise 
common in American metallurgy. 
Perhaps the most useful feature in the vol- 
ume is comprised in the digest of foreign and 
local patents, which touch upon a number of 
the principal subjects cited and which afford 
considerable data for reference purposes. The 
book is well printed and presents an attractive 
appearance. It will undoubtedly be a valu- 
able addition to a reference library for the 
chemist or manufacturer, but should not be 
accepted as authoritative or up-to-date in all 
the numerous subjects which are covered. 
ALLERTON S. CUSHMAN 
SCIENTIFIC JOURNALS AND ARTICLES 
Tue April number (volume 13, number 2) 
of the Transactions of the American Mathe- 
matical Society contains the following papers: 
G. A. Bliss: ‘‘A generalization of Weierstrass’s 
preparation theorem for a power series in several 
variables. ’” 
