March, 1907.] 



KNOWLEDGE & SCIENTIFIC NEWS. 



v. 



v CONTENTS, v 



An Extraordinary Reptile. By R. Lydekker {with illus- 

 tration) . . . . . . . . . . . . . . . . 49 



The Observation of Meteors and Meteoric Showers. 



By W. F. Denning 51 



Lord Kelvin on Earthquakes .. '.. 52 



Features of the Earth and Moon — Craterlets and 



Canals [with illustrations) .. . . . . . . . . 5 j 



Halley s Comet. By F W. Henkel, B.A . F.R.A.S., 



diagram) . . . . . . . . . . . . 57 



Practical Aerodynamics and The Theory of Aero- 

 planes— II. Head Resistance to a Body Moving 

 Through the Air. By Major B. Baden-Powell .. 59 



Correspondence .. .. .. .. .. .. .. 60 



Physics and Biology. By John Butler Burke, M.A. 



(Carab. and Dubl.). 61 



Photography : Pure and Applied. By Chapman Jones, 

 F.I.C., F.C.S., &c 



63 



Notes. — Astronomical. By Charles P. Bctler, A R.C.Sc. 

 (Lond.), F.R.P.S 



Botanical. By G. Massee 



Chemical. By C Ainsworth Mitchell, B.A (Oxon), 

 F.I.C 



Geological. By Edward A. Martin, F.G.S. 



Ornithological. By W. P. Pycraft, A.L.S., F.Z.S , 

 M.B.O.U., &c 



Physical. By Alfred W. Porter, B.Sc. 



Zoological. By R. Lydekker 



Reviews of Books 



Microscopy. Conducted by F. Shillington Scales, B.A , 



P.R.M.S. (with illustrations) 



The Face of the Sky for March. By W. Shackleton, 



F.RA.S. 72 



64 



64 



65 

 66 



66 



67 

 67 

 68 



*• NOTICES, v 



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