54 
d. schemes based largely upon origin; ¢. schemes based 
entirely upon origin. The latter includes the classifica- 
tion proposed by Professor Kemp, which is in part as 
follows: I. Of igneous origin. Excessively basic de- 
velopments of fused and cooling magmas. II. Deposited 
from solution, including, among other sub-divisions, 
surface precipitations, disseminations (impregnations), 
contact deposits and segregations. III. Deposited from 
suspension, including metalliferous sands and gravels and 
residual concentrations. 
Part II. treats of the deposits of the various ores found 
in this country, including iron, copper, lead, zinc, silver, 
gold, aluminum, antimony, arsenic, bismuth, chromium, 
manganese, mercury, nickel, cobalt, platinum, tin, etc. 
Finally are given general remarks upon the distribution of 
the ore deposits in this country, with addenda relating to 
various special subjects. It will be seen from the above 
summary that the ground has been well covered, pro- 
ducing a most valuable manual, with a presentation of the 
latest theories in economic geology and a description of 
American mines which can not fail to be of greatest value 
to all interested, directly or indirectly, in these fields. 
An Introduction to General Logic. By E. E. C. Jones. 
London and New York, Longmans, Green & Co. 
Tuis is a systematic treatment of logic intended for 
beginners, and is written on the lines laid down by the 
author’s ‘‘Elements of Logic,” previously published, a 
work more controversial and also more fragmentary in 
character. There is so much that is new under nearly all 
the topics discussed that these two books may be regarded 
as a distinct step in advance in formal logic, provided, of 
course, that the novelties do not turn out when examined 
to be valueless. There is a new definition of the science, 
a new description of the import of propositions, a new 
terminology for the forms of inference, several forms 
themselves new, a new rendering of the laws of thought 
SCIENCE. 
Vol. XXIII. No. 573 
and the axiom of syllogism, a new division of fallacies 
and a new formula and derivation for the syllogistic ren- 
dering of induction, besides subsidiary classifications, 
distinctions and doctrines in detail. ‘The novelties are 
nearly all connected with the peculiar standpoint taken to 
begin with, that logic is a science of relations between 
propositions, followed by an analysis of the import of 
propositions which includes an indentity of that to which 
the terms are applied along with a diversity of aspect 
marked by the distinctness of terms. This much at least 
may be said for such an analysis, that whether correct or 
not, it is explicit on a point where most logics are con- 
fused or evasive, and this explicitness allows the subse- 
quent rules of inference to be stated in a clearer way than 
ordinarily, and serves as basis for a glance at, and perhaps 
a contribution to, many of the bewildering and shifty 
problems which at every turn stay the logical wayfarer of 
every generation. Among the problems so treated are 
the qualification of the predicate, the adaptation of current 
words for logical terms, and the subservience of, the 
canons of experiment to the axiom of inductive generali- 
zation. 
elhe scope of the topics included resembles the Con- 
ceptualist plan of treatment rather than that of Mill and 
his school. It is thus restricted because Mill’s width was 
purchased by a sacrifice of consistency. Mill’s analysis of 
import was less formal, and admitted differing relations 
which lay on no uniform level of abstractness ; and his 
consequent discussions wandered over the field of science 
arbitrarily. To Miss Jones’s main outline, however, is 
appended a brief sketch of such of the methodology in 
Mill as lies outside the boundary of her own scheme, and 
finally a very complete index and vocabulary furnishes the 
student for further reading and for examinations. We 
regret to notice several misprints which should be removed 
ina second edition. Miss Jones’s style of writing is 
eminently suggestive, though perhaps too severe to suit a 
superficial or unintelligent reader. 
THE 
POPULAR 
SCIENCE MONTHLY 
FOR FEBRUARY. 
From Creation to Evolution, I. The Visible 
Piso’s Remedy for Catarrh is the 
Best, Easiest to Use, and Cheapest. 
Sold by Druggists or sent by mail. 
50c. E. T. Hazeltine, Warren, Pa. 
“Por the enlightened owner of gardens and woodlands 
this journal is invaluable.’—New York Tribune. 
Universe. By Andrew D. White, LL.D. ee 
This is the first of a group of papers by Dr. White 
which are intended to show that the modern scientific 
conception of the universe, including man and his 
activities, has been developed out of the theological 
and metaphysical conceptions through a continuous pro- 
gression. Readers of the Monthly will find the subject 
traced with all the wealth and definiteness of evidence 
which always characterize Dr. White's writings. These 
papers are in continuation of the series ‘* New Chapters 
in the Warfare of Science.” 
Tyndall and his American Visit. 
E. A. Youmans. 
An account of Tyndall's only trip to this country, con- 
taining hitherto unpublished letters. 
Heredity in Reiation to Education. By 
By Miss 
SSSR ANUARY 4 1893 ae 
A beautifully illustrated journal of 
Horticulture, Landscape Art and 
Forestry, filled every week with fresh, 
entertaining, practical and accurate 
information for all who love nature or 
Prof. WesLey Mitts, M.D. 
Counsels teachers to look at the characteristics of the 
parents in order to learn how to treat their pupils. 
Where Bananas Grow, Illustrated. By James 
GERMANIA or the German tangvage and litera 
take an interest in flowers, shrubs and 
trees. Its writers are the foremost 
E. Humpurey. 
Describes the banana plantations of Jamaica, and 
tells with the aid of pictures how the fruit is gathered 
and shipped. 
OTHER ARTICLES ON 
Notes from a Marine Biological Laboratory (illustrated) ; 
The Relation of Evolution to Political Economy ; 
Physical Conditions of the Deep Sea (illustrated) ; 
The Circassian Slave in Turkish Harems; The 
Psychology.of a Dog; Superstitions of the French 
Canadians ; The Wandering Jew at the Salpetriere ; 
The Shape of the Earth from_a Pendulum; The 
Position of Geology ; Sketch of David Starr Jordan 
(with Portrait). 
Editor’s Table ; Literary Notices; Popular Miscellany ; 
Notes. 
50 cents a number; $5.00 a year. 
D. APPLETON & CO., NEW YORK, 
are, is highly recommended by college professors 
und the press as “‘the best effort yet made to assist 
be student of German, and to interest him in bis 
oursuit.” Its BEGINNERS’ CORNER furnishes every 
rear a complete and interesting course in German 
srammar. $2ayear. Single copies 20 cents. P. O 
30x 151, Manchester, N. H. 
MINERALS Largest, finest and most beautifully 
* displayed stock in the U.S. 
GEMS. 
Two medals at World’s Columbian Exposition. Price 
lists free. Catalogue rsc., indexing all mineral species. 
GEO. L, ENGLISH & CO., Leading Mineralogists of 
the U.S., No. 64 East 12th Street, New York City. 
Choice and rare stones of all kinds. Rubies, 
Sapphires, Emeralds, Tourmalines, etc. 
American and European authorities, 
and the editorial and leading articles 
constitute the best literature of the 
time on all subjects within the scope 
of the paper. 
“The foremost journal of its class.’’—Boston Herald. 
“A delightful weekly companion.” —Ha7er’s Weekly. 
PUBLISHED WEEKLY. $4 A YEAR. 
Specimen copy free on application. 
Garden & Forest Pub. Co., 
Tribune Building, NEW YORK. 
