r 



December i, 192 i] 



NATURE 



455 



At the University Press.) Part i, 55. 6d. net; part 2, 

 -s. 6d. net. 



Market Nursery Work : A Series of Six Books on 

 Lhe Cultivation of Crops for Market. By F. J. 

 Fletcher. Vol. i : Glasshouses and the Propagation 

 of Plants. Pp. viii+75. Vol. 2 : Special Glasshouse 

 Crops. Pp. vi + 72. (London : Benn Bros., Ltd.) 

 45. 6d. each. 



Penrose's Annual. Vol. 24 of the Process Year 

 Book and Review of the Graphic Arts, 1922. Edited 

 by W. Gamble. Pp. xii+91+plates. (London: 

 Percy Lund, Humphries and Co., Ltd.) Ss. net. 



Ocean Research and the Great Fisheries. By 

 G. C. L. Howell. Pp. 220+20 plates + 3 maps. 

 (Oxford : Clarendon Press.) j8s. net. 



Letters to Mv Grandson on the World About Him. 

 By the Hon. Stephen Coleridge. Pp. 124. (London : 

 Mills and Boon, Ltd.) 45. net. 



The Handicraft Art of Weaving. By T. Wood- 

 house. (Oxford Technical Manuals.) Pp. xii+165. 

 (London : He»ry Frowde and Hodder and Stoughton.) 

 6s. net. 



A Text-book of Inorganic Chemistry. By Prof. 

 A. F. Holleman. Sixth English edition, revised. 

 ; Issued in English in co-operation with H. C. Cooper.) 

 Pp. viii-f-528. (New York : J. Wiley and Sons, Inc. ; 

 London : Chapman and Hall, Ltd.) 195. net. 



Elementary- Chemical Microscopy. By Prof. E. M. 

 Chamot. Second edition, partly re-written and 

 enlarged. Pp. xvi + 479. (New York : J. Wiley and 

 Sons, Inc. ; London : Chapman and Hall, Ltd.) 255. 

 net. 



The Emission of Electricitv from Hot Bodies. By 

 Prof. O. W. Richardson. (Monographs on Physics.) 

 Second edition. Pp. viii + 320. (London : Longmans, 

 Green and Co.) i6s. net. 



Ministry of Munitions and Department of Scientific 

 and Industrial Research. Technical Records of Ex- 

 plosives Supply, 1915-1918. No. 4 : The Theory and 

 Practice of Acid Mixing. Pp. vi + 93. (London : 

 H.M. Stationery Office.) 12s. net. 



The Psychology of Medicine. By Dr. T. W. 

 Mitchell. Pp. viii+187. (London: Methuen and Co., 

 Ltd.) 6s. net. 



Annual Report of the Meteorological Committee to 

 the Air Council for the Year ended 31st March, 192 1. 

 Pp. 72. (London : H.M. Stationerv Office.) 2s. net. 



The Historical Geography of the Wealden Iron 

 Industry. By M. C. Delany. (Historico-Geographical 

 Monographs.) Pp. 62+3 maps. (London : Benn 

 Bros., Ltd.) 45. 6d. net. 



La Matiere et I'Energie : Selon la Theorie de la 

 Relativity et la Theorie des Quanta. By Prof. L. 

 Rougier. Nouvelle edition. Pp. xii+112. (Paris: 

 Gauthier-Villars et Cie.) 9.50 francs. 



The Manufacture and Uses of Explosives, with 

 Notes on their Characteristics and Testing. By Dr. 

 R. C. Farmer. (Technical Primer Series.) Pp. xii + 

 it6. (London: Sir I. Pitman and Sons, Ltd.) 

 25. 6d. net. 



Dictionarv of Botanical 

 English : German-English, 

 and E. M. Smiley. Pp. 

 ^^"'^liams and Wilkins Co.) 



Vorlesungen iiber Thermodynamik. Bv Prof. Dr. 

 Max Planck. Sechste auflage. Pp. x+292. (Berlin 

 and Leipzig : W. De Gruyter and Co.) 1.28 

 shillings. 



Meddelelser fra Kommissionen for Havunders0gel- 

 ser. Serie Fiskeri. Bind 6, Nr. 2. 102 1 : Danish 

 Investigations of Plaice from the North Sea, July, 

 1919-Julv, 1920. Bv Dr. K. Smith. Pp. 68. (Koben- 

 havn : C. A. Reitzel.) 



Equivalents. French- 

 By Dr. E. Artsch\«ager 

 137. (Baltimore, Md. : 

 2 dollars. 



Diary of Societies. 



NO. 2718, VOL. 108] 



THURSDAY, Decembeb 1. 



LixsEAJf SociETT or LoxDOs, at 5.— Prof. W. N. Jones : Note on 

 the Occurrence of Brachiomonas. — J. Burtt-Davy : The Distribu- 

 tion of Salix in South Africa. — Miller Christy : The Problem 

 of the Pollination of the British Primulas. 



RoTAL AEBONArncAL SociETT (at Royal Society of Arts), at 5.30. — 

 Major C. H. Scott: The Present State of Airship Berelopment. 



IxsTiTiTiox OF Electricai, ExGixEERS, at 6. — L. J. Steele and H. 

 Martin : The Cyc-arc Process of Automatic Electric Welding. 



RoiAL Microscopical Societt (Metallurgical Section), at 7.30. — 

 The Practical Application of Yertical Illuminators in the De- 

 termination of the Structure of Metals and Alloys and in 

 Metallos-raphical Research Generally. Exhibition of Yarioua 

 Types of Vertical Illuminators by C. W. Hawksley and P. Swift. 



Chemical Societt, at 8. — R. Mond and A. Wallis : Some Researches 

 on the Metallic Carbonyls. — R. Mond and A. Wallis : The Action 

 of Nitric Oxide on the Metallic Carbonyls. 



RoTAL SociETT OF Medicixe (Obstetrics and Gynaecology Section), 

 at 8.- — R. H. Paramore : Eclampsia and its Incidence. 



Camera Club (at 17 John Street, W.C.2), at 8.15. — Madame TcTonde : 

 W(ynen in Photography. 



FRIDAY, December 2. 



RoTAL SociETT OP Mebicixe (Laryngology Section), at 4.45. 



RoTAL Astroxomical Society, at 5.— GeoTjhysical Discussion : Cer- 

 tain Geological Consequences of the Cooling of the Earth. Opened 

 by Dr. H. Jeffreys, continued by Dr. Jeans, Prof. Lindemann, 

 Dr. E-vans, and Col. Grove-Hills. Chairman, Sir Jethro Teall. 



IxsTiTriTOx OF Electrical Exgixeers (Students Section), at 7. — 

 H. S. Petch ; Automatic and Semi-automatic Railway Signalling. 



JrxioR Ixstitftiox or Exgixeehs (&t Caxton Hall), at 8. — B. L. 

 Ladkin : Notes on >[aintenance of Electrical Accumulators. 



RoTAL Photographic Societt or Great Bbitaix, at 8. — M. O. Dell : 

 Ideals and Methods in Picture Making. 



RoTAL SociETT OF Mediciwe (Anjpsthetics Section), at 8.30. — In- 

 formal Meeting. 



SATURDAY, December 3. 



Gilbert White Fellowship fat 6 Queen Square, W-Cl). at 3. — 

 Prof. G. S. Boulger : The Sundews : Their Kindred and Neigh- 

 bours. 



3I0XDAY, December 5. 



RoTAL BoTAXic SociETT OF LoxDOX, at 3. — Prof. A. W. Bickerton : 

 Gardening (1). 



Victoria Ixstitcte (at 1 Central Buildings. S.W.I), at 4.30.— Rev. 

 A. C. Robinson : Darius the Median and the Cyropsedia of Xeno- 

 phon in the Light of the Cuneiform Inscriptions. 



Royal IxsTiimox of Great Britain, at 5. — General Meeting. 



SociETT OF ExGiXEERS (at Geological Societr), at 5.30. — W. M. 

 Beckett : Northwich Sewerage and Sewage Disposal Works. 



IxsTiTiTiox OF Electrical Exgixeers (Informal Meeting), at 7. — 



C. L. Lipman and others : Discussion on Some Recent Develop- 

 ments in the Design of A.C. Instruments. 



Artstoteltax Societt (at 21 Gower Street. W.C.I i, at 8. — ^Prof. J. 

 Johnstone : The Limitations of Knowledge. 



RoTAL Ixstitfte OF BRITISH ARCHITECTS, at 8. — Business Meeting. 



RoTAL SociETT OF ARTS, at 8. — A. Af. Hind : Processes of Engraring 

 and Etchine" (Cantor Lecture) (2). 



SociETT OF Chemical Ixdustrt (at Chemical Society t. at 8. — W. L. 

 Baillie : An Autoclave Test for the Grading of Chemical Glass- 

 ware— Dr. E. Fyleman : Separation of Adherent Oil or Bitumen 

 from Rock. 



RoTAL Geographical Societt (at .lEolian Halll, at 8.30. — G. if. 

 Gathorne-Hardy : A Recent Journev in Northern Labrador. 



Royal Society of Medicixe (Tropical Diseases and Parasitology 

 Section), at 8.30 —Dr. Broua'hton-Aleock. Prof. W. Torke. and 

 Dr. P. Manson-Bahr : Discussion : Amoebic Dvsenterr in Great 

 Britain : its Sieniflcance and Treatment. — Dr. M. Khalil : Thermo- 

 tropism in Ankylostome Larvse. 



TUESDAY, Deceubek 6. 



Royal Societt of Arts (Dominions and Colonies Section), at 4.30. — 

 F. C. Wade : British Columbia : The Awakening of the Pacific. 



Ror.AL SociETT OF Medicixe (Surgery: Sub-Section of Orthopaedics), 

 at 5.30.— N. Dunn and others : Discussion : Stabilising Operations 

 in the Treatment of Paralytic Deformities of the Foot. 



WoMEx's Exgixeerixg Societt (at 26 Georee Street, W.l), at 6.15. — 

 T. Clarkson : The Use of Home-produced Fuels for Commercial 

 Motor Transport. 



IxsTiTrTE OF M-ARixE ExGixEERS (at 85 The Minoriesl. at 6.30. — Sir 



D. Wilson-Barker : Weather at Sea. including Clouds, Waves, etc. 

 Royal Photographic Society of Grfjit Beitaix. at 7. — H. M. 



Edmonds : A New Mode of Producing Sculptures by the Aid of 

 Photography. 



ROxTGEX .SocTETT (at Institution of Electrical Ene-ineerst. at 8.15. — 

 M. A. Codd : Some Investigtitions on Transformer-Rectifier Sets 

 for X-ravs.— C. E. S. Phillips : X-rav Tubes Connected in Parallel. 



RoT.AL SociETT OF Medictxe (Pathologv Section) (at Lister In- 

 stitute), at 8.30. — Dr. V. Korencheusky : Experimental Rickets 

 in Rats, with rien'onstTation of Specimens. — ^Dr. G. Seeal : The 

 Association of Typhus Virus with the Various Blood Elements. — 

 A. W. Bsicot ; Domoistrntions of P^^ctal Infection of Lice bv 

 Weill's Method— A. W. Bacot and Dr. G. S^gal : The Develop- 

 ment of Rickettsia in Lice, followinsr Intrarectal Infection with 

 Typhus Virus.— Dr. R. St. John Brooks and Dr. M. Rhodes : Seme 

 Observations on the Hasmorrhagic Septicaemia Group. — Miss E. H. 

 Lepper : Gall-bladder Infections follnwins" the Intravenous Inocu- 

 lation of Coliform Organisms in Rabbits. — Dr. S. P. Bedson : 



