302 
POPULAR SCIENCE REVIEW. 
The Fairfield Orchids cultivated by Messrs. James Burke & Co. Brad- 
bury & Evans, 1872. This is, of course, a publication got up for the pur- 
pose of selling the orchids of this firm. We believe that Mr. Leo Grindon 
had a share in its production. 
The Stone-Age in New Jersey. By Charles C. Abbott, M.D. Salem, 
U.S., 1872. This is unquestionably the best paper and most elaborately 
illustrated which has appeared on flint weapons in any part of the world. 
It is admirably done, and we are glad it has been reprinted from the 
a American Naturalist,” in which it originally appeared in last March or 
April. 
Optical Illusions Explained. By A. B. Lacy, 1871. Is simply an ex- 
planation which exists in every treatise on natural philosophy in existence. 
The Testimony of the Pocks, fyc. By T. Callard. London : Elliot Stock, 
1872. The whole matter is explained in about twenty-five pages of the 
smallest duodecimo. The author has been fortunate, we must say. 
The Existence of Projectile Forces in Nature. By John Parker. New 
York : Wiley, 1872. The author simplifies the whole of astronomical 
questions, in twelve pages 8vo. ! ! 
The Hygiene of Air and Water. By W. Proctor, M.D., E.C.S. London : 
Hardwicke, 1872. This is a sensible little book on two important points in 
Hygiene. We recommend it to our readers’ notice. 
Human Progress in Medical Education. By W. Aitken, M.D., Professor 
of Pathology in the Army Medical School. London : Griffin & Co., 1872. 
This is a very capital address, given by the Professor of Pathology at 
Netley. It will repay attention. Dr. Aitken seldom speaks without saying 
something to the point. 
