"__REVIEWS. 
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carrying capacity of it. This in turn cures anemic persons. The introduction 
of ozone in ventilation would probably remove the-necessity for open-air schools 
now common in most cities. “Fuel Oil Equipment,” by John P. Leask; “Oil 
Fuel v. Coal,” by D. M. Myers; “Four Years’ Experience in prevention of 
Corrosion of Pipe,” by F. N. Speller and W. H. Walker; “The Magazine Feed 
Boiler and Fuel Conservation,” by Chas. F. Newport; and “Heat Losses from 
Direct Radiation,” by J. R. Allen are other articles. 
The Journal of the Franklin Institute (February) contains an aeaatat on. 
Sound Ranging, by Professor A. Trowbridge, who was in technical charge of 
Sound and Flash Ranging in the A.E.F., in which he describes the principles 
of the science and the work done on the Western Front. The relative merits of 
Monocular and Binocular Field Glasses are discussed by E. P. Hyde, P. W. Cobb, 
H. M. Johnson, and W. Weniger. “The Absorption of Nutrients and Allied 
Phenomena in the Pitchers of the Sarraceniacex” is contributed by J. S. Hepburn, 
FB. Q., St. John, and F. M. Jones. “Brannerite, a new Uranium Mineral,” is de- 
seribed by F. L. Hess, A. B. and R. C, Wells, Ph.D. —- : 
Journal of Agricultural Research, published by authority of the Seéretary of 
Agriculture, United States of America, with, the co-operation of the Association 
of Land. Grant Colleges (February). .Contents: “ European Beit Fly in North 
America,” by J. M. Aldrich, “Lepidoptera at Light Traps,” by W. B. Turner, and 
“Life History of Enbiomyia calosome, a Tachinid Parasite of Calasoma Beetles.” 
The Anatomical Record (Januar Y) from the Wistar Institute of Anatomy 
and Biology. — 4 
The American Journal of Anatomy (January) from the Wistar Institute of 
Anatomy and Biology. ‘ 
Select list of works relating to City Planning ‘and Allied Subjects from the 
New York Public Library.” 
A Critical Revision of the Genus jatirctopaiiit by J. H. Madea LS.0., F.R.S., 
F.L.S., Government Botanist, New South’ Wales. Vol. IV., parts 9 and 10. 
Price 2s. 6d. each. Government Printer, Sydney. ERTS 
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