August 24, 19051 



NATURE 



THE JUBILEE CATALOG UE ANNftLS OF BOTANY. 



ISSUED TO MARK THE 

 FIFTY YEARS' EXISTENCE OF THE FIRM 



OF 



E. LEYBOLD'S NACHFOLGEK, 



eOLOGNE, 



Contains on its more than 900 pages a complete 

 survey of the apparatus used for instruction in 

 Physics, as well as numerous practical instruc- 

 tions and about 3000 illustrations. 



NATURE says:— "The firm of Leybold Nachfolger 

 in Cologne has recently issued a very complete and 

 interesting catalogue of physical apparatus and 

 fittings sold by them. The book starts with a history 

 of the instruments made in Cologne during the last 

 century. In its second section we find an account 

 of the construction and fittings of various chemical 

 and physical institutions. After this follows the cata- 

 logue proper, filling some 800 large pages, profusely 

 illustrated and admirably arranged. The book will be 

 most useful to the teacher." (No. 1846, Vol. 71.) 



THE CATALOGUE WILL BE FORWARDED TO SCHOOLS 

 AND INSTITUTES ON APPLICATION. 



MARCONI'S 



WIRELESS TELEGRAPH CO. 



Ltd., 



MANUFACTURERS OF 



High-Class Apparatus for Rontgen 

 Ray and High Frequency Work. 



10,12 & 14 INDUCTION COILS. 



PORTABLE HOSPITAL SETS, 



SWITCHBOARDS, &c., &c. 



Descriptive Price List Free on Application to 



18 Finch Lane, London, E.G. 



ISAAC BAYLEY BALFOUR, M.A., M.D., F.R.S., 

 of the University of Edinbura:h ; D. H. SCOTT, 

 M.A., Ph.D., F.R.S., of the Royal Gardens, Kew ; 

 W. G. FARLOW, M.D., of Harvard University, 

 U.S.A., assisted by other Botanists. 



Royal 8vo. 



The subscription price of each Volume is j€l 10s., payable in 



advance. Intending subscribers should send their names, 



itliih subscription, to Mr. Henry Froiiide. 



Vol. XIX. No. LXXV. 



Ko)al Svo, paper covers, wilh 12 I'lates. 14^. 



CONTEN'li ; — 



Cami'bell, D. II. studies on the Araceae.— Ridley, 

 H. N. On the Dispersal of Seeds by Wind.— CiiANDi.iiR, 

 S. E. On the Arrangement of the Vascular Strands in 

 the "Seedlings" of certain Leptosporangiate Ferns.— 

 Lang, W. H. On the Morphology of Cyathodium.— 

 Bui.LER, A. H. R. The Reactions of the Fruit-bodies 

 of Lentinus lepideus, Fr., to External Stimuli.— Notes. 



LONDON : HENRV FROWDE, 

 OXFORD UNIVERSITY PRESS, AMEN CORNER, p:.C. 



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BEWARE OF 



FEEBLE 

 IMITATIONS 



in Scientific Demonstrating? 



sa, send for our full descriptive pamphlet of 

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