CONTEXTS. 



Notes on British Foraminifera. IV. Haplo- 

 pliragiiiiiim agglutinaiis. D"Orbisny. Sp. 

 HaplophriigDiium caiiaricnse. D'Orbignv. Sp. 

 By Eduard Hcrnii-Allen. F.L.S.. F.R.^t.S.. 



and Arthur Earlaitd 421 

 On the Study of Double Stars by Amateur 



Observers. IV. By G. F. Chambers. F.R.A.S. 426 

 The Destruction of Weeds by Chemical 



Means. II. By Harold C. Long. B.Sc. 430 



The Observ.atory on Mount Wilson, where 

 Mirrors supplant the Telescope Tube. 



By Felix J. Koch. 433 

 Thf. Life History of a New Monad. 



By Aubrey H. Drcu: 436 

 Solar Disturbances During September. 1910. 



By Frank C. Dennett 438 

 Some Mental Illusions of Vision. 



By R. T. Leu-is. F.R.M.S. 439 

 X-Rays for Examining Petrifactions. 



By Dr. Alfred Gradenwitz 440 

 The Shooting Stars of November. 



By Vr. F. Denning 440 

 Curved Photographic Plates. 



By F. A. Bellamy, Hon. M.A. (0.vok.I, F.R.A..S. 441 



PAGE. 



Correspondence ... ... 442 



Literary Notices 444 



The Face of the Sky for No\embkr. 



By W. Shackleton. F.R.A.S., A.R.C.S. 445 



Giovanni Schiaparelli. By \V. Alfred Parr. 446 



Notes. — 



Astronomy. By G. F. Chambers, F.R.A.S. 447 



Botany. By Professor F. Cavers. D.Sc, F.L.S. 4^8 

 Cheniistrv. 



By C. .Ainsu-orth Mitchell. B.A. (O.vo/i). F.I.C. 449 

 Economic Biologw 



By Walter E. Collinge. M.Sc. F.L.S.. F.E.S. 450 



Geology. By G. W. Tyrrell. A.R.C.S.. F.G.S. 451 



Meteorology. By John A. Curtis, F.R.Met.Soc. 452 



Microscopy. By A. W. Shcppard. F.R.M.S. 452 



Photographv. 



By C. E'. Kenneth Mees. D.Sc. iLond.i. F.C.S. 456 



Physics. By W. D. Eggar, M.A. 457 



Zo61og\-. By Professor J. .Arthur Thomson. .17. .4. 457 



Reviews ... ... ... 458 



Queries and .Answers 461 



Notices 462 



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