404 



NATURE 



[January i8, 191 2 



Mould thrm. 



nnd »»n1nrfj<^ I tySD/fESDAY, Jamoaicv •4. 



T' " ' i<t, at 8.— A New Pr o wM of Hydr««lic Sepaiaiinc 



.t i.—Thr Vjiprr K«»i»<-T <nr ArHcn) Sandftone aiid 

 N tocimteU K<«-k« oi Warwi ■ " " * M ■' i 



' r//u/ 



■-1. — I'roiaoit I'apert : iietcrmi' ' ■-" 



II of Gmcs ana the Velocity 

 -mt of Mp4n Free Path*; Pf ' 



O. Rankiac. 



\.- !; 



.1 Cnlislrlhi 



(lurliiin I'- 

 ll c. n. \\i 



|;.i\Vr.s.) I 



N.iii 



liiiii-, : 



i< I ham 

 c. net. 



.111. 1.- I. 



I alMl 



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p. viii 



w; . •^^ 



.nil. 



DIARY OP SOCIETIES. 



THURSDAY, Januakv 18. 



Poya: t 4.-^o.— Tli^ Plnsiol ::ira! FnTccls of ' 



Pre crveil on Pike's Peak, Co'orado ( I 



mui..,..i.,-n,, l>r. J. S. HaWanc, F.R.S.. C. G. iJoiui - ■ 1 >. ». 

 Henderson, and Prof. E. C Schneider.— On the efTe< 1 of altitiulc in 

 the distoriation riirve of the blood; J. Barcroft, K.K S. — Note oi\ 

 As''- ',■■■- " .' T.ister : K. Kirkpatrick. — Herpetoiiionas f'eiiicvli. 



Kov I 111- AlitiRiitary Tract of Pedicvlus vtslinir.tt^, 



the ; „• : I )r. H. 1!. Fantham. — Antelope Infected with 



Tryrati.K-.'>„,i i^,uu;i,->isi \ Capt. A. D. Fraser, R.A.M.C, and Dr. 

 H. L. Duke. 



RovAL Institution, at 3.— The New Astronomy: Prof. A. W. Bickerton. 



LiNNEAN Society, at 8.— Some Features of the Marine Flora of St. 

 Andrews : Dr. A. Anstruther Lawson. 



Royal Society of Arts, at 4.30.— The Old District Records of Bengal : 

 Rev. W. K. Firminger. 



Institution of Klectricat, F.ngineers, aiZ.— Adjourned Discussion : 

 Residence Tariffs : A. H. Seabrook. 



Institution of Mining and Mf.tali trRCY, at 8.— A Suhmerijed Flexible- 

 joint Main : F. Reed. — Unwaterine Tresavean Mine : C. Brackenbury. — 

 Notes on the Operation of Two Winding Engines : H. M. Morgans. — 

 Sloping at the Calamon Mine : C. P. Corbett Sullivan. 



FRIDAY, Januakv 19. 



Institution of Mechanical Fngineers, at 8.— The Evolution and 

 Present Development of the Turbine Pump : Dr. Edward Hopkinson and 

 Alan E. L. Chorlton. 



Royal Institution, at q.— Heat Problems: Sir I. Dewar, F.R S. 



Institution of Civil Engineers, at 8.— The Turbo-blower and Turbo- 

 compressor : G. Ingram. 



SATURDAY, January 20. 

 RovAL Institution, at ■?.— The Banyoro-A Pastoral People of Uganda ; 

 (i) The Milk CusDms : Kev. J. Roscoe. 



MONDAY, January 22. 

 Royal Society of Arts, at 8.— Ocean Waves, Sea beaches, and S.tnd- 



banks : Dr. Vaughan Cornish. 

 Aristotelian Society, at 8.— The Relation of Willing to Cognition : 



Prof. G. Da we-i Hicks. 

 Aeronautical Society, at 8.30.— The Development of Animal Flight : 



Dr. E. H. Hankin. 

 Victoria Institute, at 4.-?o.— The Conditions of Habitability of* Planet, 



with special reference to the Planet Mars : E. W. Maunder. 



TUESDAY, January 23. 



Royal Institution, at 3.—! he Study of Genetics : Prof. W. Bateson, 

 F.R.S. 



Royal Anthropological Institute, at 8.1s.— Anniversary Meeting.— 

 S.jO- — Some .American Problems: A. P. Maudslay. 



MiNERAi.OGiCAL SOCIETY, at 5. 30. —The Relationship between Crystalline 

 Form and Chemical Constitution ; tht Double Chromates of the Alkalies 

 and Magnesium: Miss M. W. Porter and Dr. A. E. H. Tutton.— t)n 

 Liveingite : Prof. W. J. Lewi«. — A New Anorthic Mineral from the 

 Rmnenthal: R. H. Solly and Dr. G. F. H. Smith.-On Colemanite and 

 Neocolemanite : Dr. A. Hu'chinson. — Further Observations on the 

 Optical Characters of Gypsum : Dr. A. Hutchinson and Dr. A. E. H. 

 Tutton.— Note on a Large Cry«;tal of .-Vnatase from the Binnenthal : Dr. 

 G. F. H. Smith. 



Institution of Civil Engineers, at %.— Further Discussion : Reinforced 

 Concrete^ Wharve< and Warehouses at Lower Pootune, Shanshai : S. H. 

 Ellis. — The_ Direct Experimental Determination of thf '^'- ' the 



Steel and in the Concrete of Reinforced-Concrete ( C. 



Popplewell —Composite Columns of Concrete and Steel r.— 



Prohatle Paier: The Central Heating and Power-par,! o; vicGill 

 University, Montreal : R. J. Durlev. 



On the Vi»co»itiefi of ' 



— The Tc»ting of PUi ■ 

 Royal Institution, at 3. — I If N- 'V. Rickerton. 



Institution of El. kctrical fcNGi' in FUearical 



Mnhincry: Miles Walker and H. i 



FRIDAY, Jawuarv a6. 

 • stitution, at 9. — The Pressure of a Blow : Prof. B. Hopkins /!.. 

 K K.S. 

 Physical S(x:ietv, at 5.— Exhibition of a Direct-reading Insiromeni for 

 Si'b-narine Crb'e and other Calculations : R. Applcyart!.— On tlie Vilrri 

 tion Galvanometer and its Application to I 

 worth. — Note on a Negative i^esult 

 J. H. Vincent and A. Bursill.— On Se.i 

 iCryplon and the Auroral Spectrum : T. W. I'age. 



SATURDAY, January 27. 

 Roval Institution, at 3. —The P.anyoro : A Pastoral People of Uganda : 

 (9).Biith and Death Customs : Kev. J. Rotcoe. 



CONTENTS. PAGE 



The Mnemic Theory of Heredity. Dv Prof. Arthur 



Dendy, F.R.S ' ',71 



Boy Labour and Apprenticeship ;72 



British and Irish Fresh-water Fishes, liy L. W. B. 373 

 Studies of Bird-life in Uganda. By Sir H. H. 



Johnston, G. CM. G., KC.B 374 



Cacao-planting. l!y T. A. H 37-; 



A Year-book of Science 37'> 



Our Book Shelf 370 



Letters to the Editor: — 



.^])ectroscopic Methods. — R 377 



Are I'vis t-wr .Aiitophanous ? — Col. J. Herschel, 



R.E.. F.R.S 377 



The Weather of 1911.— J. I.Craig 378 



Microscope Stands. — John A. L. Sutcliffe .... 378 



Under the Greenwood Tree. {IllustraUd.) 379 



The British School at Athens. {Illustrated.) . . . 380 

 The Washington Meeting of the American Asso- 

 ciation 3S2 



Notes 3S3 



Our Astronomical Column : — 



Possible Changes in .S.at urn's Rings 3SS 



Mars . ;'^') 



A New Variable or Nova, 87, 191 1, Persei . . 



The Light of Coinets iaii/'nn<l 191 Ir ; ' 



The Solar Constant 3^9 



The Survey of India. l;y H. G. L 3S9 



The Sand-dunes of New Zealand. [Ulustraicd.) By 



Dr. Vaughan Cornish .... 390 



Brewing and Modern Science. . . 391 

 Educational Conferences Considcicu m ixciaiionto 



Science in Public Schools. I. By G. F. Daniell 393 



The Protection of Ancient Monuments 394 



Notes on Museums and Menageries 395 



Carbohydrate Formation in Plant Foliage 395 



The Democratisation of Mathematical Education. 



By Prof. E. W. Hobson, F.R.S 396 



The Functions of Lectures and Text-books in 



Science Teaching. By Sir J. J. Thomson, F.R.S. 399 



University and Educational Intelligence 4C0 



Societies and Academies 4°' 



Books Received 403 



Diary of Societies 4^4 



NO. 2203, VOL. 88] 



