OCTOBER 13, 1899. ] 
Hovey, of Dr. Salvatore Lo Bianco’s detailed 
account of the methods employed at the Naples 
aquarium for preserving invertebrates. The 
many who have admired the beautiful speci- 
mens sent out from that institution will be glad 
to have this paper, although it is evident that 
the factor of patience must enter largely into 
most of the processes described. The article is 
prefaced by a brief account of the aquarium 
and its work. ? 
THE publication is announced by Archibald 
Constable & Co., of a Physical Atlas, prepared 
under the direction of Mr. J. G. Bartholo- 
mew, of the Edinburgh Geographical Institute. 
The work will be in seven volumes as follows : 
I. Geology ; II. Orography, Hydrography and 
Oceanography ; III. Meteorology ; IV. Botany ; 
V. Zoology; VI. Ethnography and Demog- 
raphy ; VII. General Cosmography and Ter- 
restrial Magnetism. The atlas of Berghaus 
will to a certain extent be used, but the plates 
will be larger in size and special attention will 
be paid to phenomena of interest to English 
and American students. The volume on 
meteorology is promised for the present year 
and the others are expected to follow in rapid 
succession. 
BOOKS ‘RECEIVED. 
Statistics and Economics. RICHMOND MAyo-SMITH. 
New York and London, The Macmillan Company. 
1899. Pp. xiii+467. $3.00. 
The Principles of Differential Diagnosis. FRED. J. 
Smita. New York and London, The Macmillan 
Company. 1899. Pp. ix+353. $2.00. 
Résistance électrique et fluidité. GOURE DE VILLE- 
MONTEE. Paris, Gauthier-Villars. 1899. Pp. 
188. 3 fr. 
Exssais des huiles essentielles. HENRI LABBE. Paris, 
Gauthier-Villars. 1899. Pp. 108. 
Le café culture—manipulation, production. HENRI 
LEcoMTE. Paris, 
1899. Pp. vi+334. 
Georges Carré and C. Naud. 
5 fr. 
SCIENTIFIC JOURNALS AND ARTICLES. 
THE National Geographic Magazine for Octo- 
oer opens with an illustrated article on ‘ Life 
on a Yukon Trail,’ by Professor Arthur P. 
Dennis, of Northampton, Mass. Mr. Gifford 
Pinchot, the Forester of the U. S. Department 
of Agriculture, in an illustrated paper, ‘The 
Relation of Forests and Forest Fires,’ describes 
- SCIENCE. 
535 
the effect of forest fires as modifiers of the com- 
position and mode of life of the forest. A. J. 
Henry, Chief of the Division of Records, U. 8. 
Weather Bureau, contributes a study of the 
fluctuations in the surface level of the Great 
Lakes, especially interesting at the present time 
owing to the near completion of the Chicags 
drainage canal. The contents of the number 
also include ‘Tides of Chesapeake Bay,’ by E. 
D. Preston; ‘Calculations of Population in 
June, 1900,’ by Henry Farquhar, a paper read 
before Section I. of the American Association for 
the Advancement of Science, Columbus, August 
22d; ‘Peary’s Work and Prospects,’ by H. L. 
Bridgeman, Secretary of the Peary Arctic Club. 
There are a number of briefer articles, ‘ Peary’s 
Explorations in 1898-1899,’ ‘The Definite Lo- 
cation of Bouvet Island,’ and ‘The California 
and Nevada Boundary.’ 
Bird Lore for October has for its opening 
article an account of the origin and work of 
‘The American Ornithologists’ Union,’ by J. A. 
Allen, accompanied by a plate showing the 
founders of the society, comprising some of the 
men whose names are familiar to every student 
of American ornithology. ‘American Bitterns’ 
consists of two plates of the young, one and 
two weeks old, from photographs by HE. H. 
Tabor and F. W. Chapman. Henry Van Dyke 
contributes a poem ‘The Angler’s Reveille,’ 
Robert W. Haguer an article on ‘The Prairie 
Horned Lark,’ and C. F. Hodge notes ‘A 
Pleasant Acquaintance with a Hummingbird.’ 
H. M. Collins describes ‘A Peculiarity of a 
Caged Skylark,’ and Anna Harris Smith and C. 
F. Hodge describe ‘ The Ethics of Caging Birds.’ 
Isabella McC. Lemmon writes of ‘ Oliver Twist, 
Catbird,’ for young observers, and there are 
numerous notes and book reviews. Under the 
section devoted to Audubon Societies the wear- 
ing of quill feathers of the eagle and pelican is 
justly deprecated, and fac-simile and sketch of 
Audubon’s seal, the wild turkey, is given. 
DISCUSSION AND CORRESPONDENCE. 
THE PROPOSED CARD CENTRALBLATT OF PHYSI- 
OLOGY. 
To THE EpIToR oF SCIENCE: The volume of 
scientific literature is increasing at a rate that 
