JULV 28, I910J 



NATURE 



1 1 r 



Papers on a fourth recalescence in steel, Prof. Arnold ; 

 the provident use of coal, Prof. H. E. Armstrong; 

 influence of chemical composition and thermal treat- 

 ment on the properties of steels. Prof. A. McWilliam ; 

 ferro-^ilicon. Dr. S. Monckton Copeman ; corrosion of 

 iron :ind steel, Dr. J. N. Friend; the crystalline 

 structure of iron at high temperatures. Dr. Rosenhain ; 

 allotropv or transmutation? Prof. Howe; the mole- 

 •cular weight of radium emanation, Sir Wm. Ramsay 

 and Mr. R. W. Gray. Papers from the Sheffield 

 Universitv Chemical Department : Formation of 

 lolane derivatives from o- and /)-chlorobenzylchloride. 

 Dr. J. Kenner and E. Whitham ; sulphonic derivatives 

 of chloro- and nitrochlorotoluene, Dr. J. Kenner and 

 Prof. \\'. P. Wynne ; an instance illustrating the 

 relative instabilities of the trimethylene ring- as com- 

 pared with the tetramelhylene ring. Dr. J. F. Thorpe; 

 three phvsical chemical papers dealing with viscosity 

 and molecular association, \V. E. S. Turner (in con- 

 junction with C. L. Peddle and E. W. Merry). 



.Agkicultur.^l Subsection' of Section B : Sugar 

 beet growing, Sigmund Stein and G. L. Courthope, 

 M.P. ; nitrogen fixation. Prof. Bottomley and J. Gold- 

 ing ; various : cost of a day's horse labour, K. D. 

 Hall ; cost of Danish dairy farming, Christopher 

 Turnour ; effect of town atmosphere on vegetation, Dr. 

 Crowther ; scientific problems in live stock breeding, 

 K. J. J. Mackenzie. Joint meetings (i) with Economic 

 and Statistical Section : The magnitude of error in 

 agricultural experiments ; scientific method in experi- 

 mental work, Prof. H. E. .Armstrong; experimental 

 error in feeding trials, T. B. Wood and A. B. Bruce; 

 experimental error in field trials, A. D. Hall and 



E. J. Russell; experimental error in milk analysis, 



5. H. Collins; experimental en or in plant analysis, 

 R. H. Berrv; (2) with the Geological Section, Soil 

 Surveys iAgricuiliiral) : Survey of Kent, Surrey, and 

 Sussex, A. D. Hall and E. J. Russell; survey of 

 Norfolk, Mr. Newman; "Teart" land of Somerset, 

 C T. Giniingham ; (3) with the Zoological Section : 

 Part plaved bv organisms ether than bacteria in soil 

 fertility, E. J. Russell and H. B. Hutchinson. 



Section C (Geology). — Thursday, September i, 

 10. o : The Joredale Series and its equivalents else- 

 where, Cosmo Johns ; the Palaeozoic rocks of Cautley 

 (Sedbergh), Dr. J. E. Marr and W. G. Fearnsides ; 

 the graptolitic zones of the Salopian rocks of the 

 Cautiey (Sedbergh) area, Miss O. R. Watney and 

 Miss E. G. Welch; pleochroic halos, Prof. J. Joly. 

 11.30: Presidential address by Dr. A. P. Coleman; 

 mountain temperatures and radium, Dr. C. H. Lees; 

 outlines of the geology of northern Nigeria, F. D. 

 Falconer ; notes on the geology of the Gold Coast, 

 W. Parkinson ; the geological significance of the 

 nickel-iron meteorites, Cosmo Johns. Friday, Septem- 

 ber 2, 10. o : Joint meeting with Section E (Geography) : 

 (i) Papers on local geography and geology, (a) the 

 local geology, Cosmo Johns ; (b) the local 

 geography ; (c) the marine bands in coal measures 

 of south' Yorkshire, H. Culpin ; {d) the Maltby 

 deep boring, W. H. Dyson. (2) Joint discus- 

 sion on the economic products of Sheffield as affected 

 by the structure of the district. Paper by Prof. 

 McWilliam on tlie metallurgical industries in relation 

 to the rocks of the district. (3) Regional surveys. 

 Paper by T. Sheppard on the Humber during the 

 human period. Monday, September 5, 10.0 : Seisino- 

 logical report bv Dr. J. Milne; thrust masses 

 in the western districts of the Dolomites, by Mrs. 

 W. M. Ogilvie-Gordon ; on the geology of Cyrenaica, 

 Prof. J. W. Gregory; on the geology of Natal, Dr. 



F. H. Hatch. 12.0 :, Joint discussion with subsection 

 Agriculture on soil surveys. Tuesday, September 



6, 10. o : Discussion on the concealed coalfield of Notts, 



NO. 2126, VOL. 84] 



Derbyshire, and Yorks. Papers bv Prof. P. F. 

 Kendall and Dr. Walcot Gibson ; two papers by Ernest 

 Dixon; (i) Kilauea and its lessons, (2) some volcanic 

 phenomena in New Zealand, Dr. Tempest Ander- 

 son. 



Section D (Zoology). — Address by the president. 

 Prof. G. C. Bourne ; mitokinetism and the 

 electrocolloid hypothesis. Prof. Marcus Hartog; 

 semination in Calidris armarica : a kev to some 

 problems regarding its migratory movements during 

 the breeding season. Prof. C. J. Patten; some experi- 

 ments and observations on the colours of insect larvae, 

 Prof. Garstang ; a cytological study of artificial par- 

 thenogenesis, Dr. Edward Hindle; avian coccidiosis. 

 Dr. H. B. Fantham ; relation of regenerative and 

 developmental processes. Dr. Jenkinson ; first results 

 from the O.xford anthropometrical laboratorv, Dr. 

 E. H. J. Schuster; development of the pectoral girdle 

 in Acanthias vulgaris, Dr. H. W. Marett Tims; a 

 paper dealing with some sex problems, Geoffrey 

 Smith ; Dr. Gadow will give the afternoon lecture on 

 coral snakes and peacocks. 



Section E (Geography). — Presidential address, 

 Prof. A. J. Herbertson ; cotton-growing within the 

 British Empire, J. Howard Reed; the Uganda-Congo 

 Boundary Survey, Major R. G. T. Bright; the river 

 systems of Nigeria, Dr. J. W. Falconer; the alluvium 

 of the Nile, Capt. Lyons; the homeward voyage of the 

 Nimrod, Capt. J. K. Davis; Prince Charles Foreland, 

 Dr. W. S. Bruce ; the geology and metallurgical in- 

 dustries of the Sheflield district, joint meeting with 

 Section C. 



Section G (Engineering). — Presidential address. 

 Prof. W. E. Dalbv: (1) the testing of lathe tool 

 steels, (2) a new method of testing the cutting quality 

 of files. Prof. Ripper ; experiments on aeroplanes, 

 W. A. Scoble ; accelerometers, H. S. \\ imperis ; 

 optical determination of stresc. Prof. Coker ; laws of 

 electro-mechanics, Prof. S. P. Thompson ; the electri- 

 fication of the Brighton Railway, Phdip Dawson ; heat 

 insulation, F. Bacon ; report of the gaseous explosions 

 committee ; joint discussion on combustion with 

 Section B (Chemistry) ; joint discussion on aerial flight 

 with .Section A (Mathematics and Physics). 



Section I (Physiology). — Thursday, September i : 

 Presidential address. Prof. A. B. Macallum ; the 

 mechanism of reflex standing and walking. Prof. C. S. 

 Sherrington. Friday, September 2 : Discussion on 

 prevention of caisson disease, to be opened by Dr, 

 Leonard Hill. Monday, September 5 : Joint discussion 

 with Sections of Botany and Chemistry on biochem- 

 istry of respiration. Tuesday, September 6 : Joint 

 discussion with Section of Education on speech. There 

 will be the usual leports of committees, and the 

 following papers have been promised : — The relation 

 of light perception to colour perception. Dr. Edridge 

 Green ; the combination of poisons w^ith the contractile 

 substance of cardiac muscle. Dr. H. M. Vernon; 

 (i) the inorganic composition of the blood of verte- 

 brates and invertebrates and its origin, (2) the inorganic 

 composition of the blood serum of the laboratory frog 

 in spring, (3) further observations on the localisation 

 of potassium salts in animal and vegetable cells. Prof. 

 A. B. Macallum. 



Sectio'n K (Botany). — A joint discussion between 

 the Botanical, Chemical, and Physiological Sections, 

 on the biochemistry of respiration, Dr. F. F. Black- 

 man and others to take part ; a new method of esti- 

 mating the opening of stomafa. Dr. F. Darwin ; the 

 paths of translocation of sugars from green leaves, S. 

 Mangham ; (i) two synthetic genera of Filicales, (2) 

 note on Ophioglossuin palmatum, Prof. Bower; the 

 pollen chambers of fossil and recent seeds. Prof. F. VV. 

 Oliver ; the morphology of the ovules in Gnetum and 



