23 NEW PUBLICATIONS. 



(27.) Rapidity of ascent of fluid in plant (^) 8y'^ inches in seventy 

 minutes in sun. The lithium was found all through the 

 branch. Transpiration in the sun equal to 7 '5 8 per cent, per 

 hour, 



(28.) Rapidity of ascent of tluid {b) ^-^-^ inches in thirty minutes. 

 Lithium citrate. 



(29.) Ditto, (c) 5^. Thallium citrate. 



(80.) Ditto, [d) (S^^. Lithium citrate. 



(31.) Ditto, ip) 4y^^ inches in ten minutes. Lithium citrate. 



In experiments d and a the lithium was not detected except in the stem, 

 and not in the upper part of it. During these experiments, in which 

 lithium was not found all over the branch, the transpiration was only equal 

 to 4"53 per cent, per hour. — XL Influence of gases in transpiration. 

 Experiments with atmospheric air, oxygen, carbon dioxide, and nitrogen 

 gave the following results : — 



(32.) Transpiration of fluid in oxygen, one hour, sun, 12-77 per cent. 



(33.) Ditto, atmospheric air, 7'5 per cent. 



(34.) Ditto, carbon dioxide, 4"01 per cent. 



(35.) Ditto, nitrogen, 1'97 per cent. 



The bad weather and the lateness of the season terminated the experi- 

 ments before several points of interest could be fully determined. 



A Manual of Slnictural Botanij. By M.C.Cooke. 12mo. Pp.123. 

 London : Robert Hardwicke. 



This new edition of a well-known little book, contains a very compen- 

 dious and generally accurate account of all the terms used by descriptive 

 botanists, and of a good many {e.fj. lycotropal) that are not used. As a 

 classified glossary of existing and p;irtly obsolete botanical language, it 

 will be found quite as usefid as more pretentious books. The earlier sec- 

 tions contain an account of plant-chemistry, expressed with modern for- 

 mula3, and a sufficient explanation of physiological terms. Unfortunately 

 terminology is not knowledge, and the educational value of this book in 

 teaching anything about plants themselves, seems but small. What are 

 wanted to start science in schools are, cheap but accurate expositions of 

 facts, like Huxley's 'Elementary Lessons in Physiology,' not mere collec- 

 tions of dry-bones. 



Mr. Cooke has not been very happy in his etymologies, though some of 

 the worst of the previous edition have been suppressed. " A Phjtozoa" 

 with its plural " phjtozoce'" (p. 97), are likely to bring scorn upon his 

 labours from public schoolboys, on the priuci|)le of a ploughman's contempt 

 for those who cannot plongh. 



As an interesting episode, the account of the fertilization of a British 

 plant (pp. 71, 72) may be quoted: — "The Rosebay Willow-herb, EpUo- 

 biiim angastifoUiim, has a 4-lobed stigtna, supported on a style rather 

 longer than the lilaments of the stamens. When the flower first opens, 

 the lobes are closely applied together by their faces, and both style and 



