roL.,^^^ 



CONTENTS. 



VOL. XII. 



No ^^'S^ 



i.— The Origin of the Dexter-Kerry Breed of Cattle. By James 



Wilson, m.a., b.sc. (Plates I.-IV.) (January 20, 1909.) . 1 

 II.— A New British and two New Irish Birds. By Richard M. 



Bareington, m.a. (February 2, 1909.) . . .18 



III._Vitality and the Transmission of Water through the Stems of 



Plants. By Henry H. Dixon, so.d., f.r.s. (March 15, 1909.) 21 

 IV.— The Absorption of Water by Seeds. By W. E. Gelston Atkins, 



B.A. (March 16, 1909.) 35 



V —Notes on the Pollination of Certain Species of Dendrobiwn. By 



A. F. G. Kerb, m.d. (Plates V., VI.) (April 3, 1909.) 47 



VI.— Production of Ammonia from Atmospheric Nitrogen. By 



Herman C. Woltereck, ph.d. (April 3, 1909.) • • 54 



VII.— Note on the Tensile Strength of Water. By Henry H. Dixon, 



SO.D., F.R.S. (April 5, 1909.) . • • -60 



VIII.— The Colours of Highland Cattle. By James Wilson, m.a., b.so. 



(Plate VII.) (May 15, 1909.) . ■ • .66 



IX.— On a Proposed Analytical Machine. By Percy E. Ludgate. 



(April 28, 1909.) . . • , • • • '^'^ 



X.— The Taxine in Irish Yew^ By Richard J. Moss, r.i.c, f.c.s. 



(April 30, 1909.) ., 92 



XL— On Photography by Reflection under Contact. By E. E. Fournier 



d'Albe,b.so.,a.e.o.sc.,m.r;i.a. (Plate VIII.) (May 10, 1909.) 97 



XII.— Mechanical Stress and Magnetisation of Iron. Part 1. By 



William Brown, b.sc. (May 28, 1909.) . • -101 



XIII.— The Osmotic Pressures of the Blood and Eggs of Birds. By 



W. R. Gelston Atkins, b.l (May 28, 1909.) . • 123 



XIY.—Chrysophlyctis endobiotica, Schilb. (Potato -Wart or Black 



Scab), and other Chytridiacefe. By T. Johnson, d.sc, f.l.s. 



(Plates IX.-XI.) (June 16, 1909.) . • ■ -131 



XV.— The Scandinavian Origin of the Hornless Cattle of the British 



Isles. By James Wilson, m.a., b.sc. (June 19, 1909.) • 145 



