64 



NATURE [July 8, 1922 



RR'-C(OH)-CH = CH 2 ; the preparation and pro- 

 perties of three of these are described. — E. E. Blaise 

 and Mile. Montagne : The action of thionyl chloride 

 on the a-acid alcohols. With lactic and a-oxy- 

 isobutyric acids, thionyl chloride forms anhydro- 

 compounds of a new type. — MM. Pastureau and 

 Henri Bernard : The chlorhydrin of mesityl oxide 

 and its transformation into the chlorhydrin of tetra- 

 methyl glycerol. — Edmond Gain : The comparative 

 resistance to heat of the growing points of the embryo 

 of the sunflower. If the seeds have been submitted 

 before germination to temperatures just below those 

 capable of destroying life (no° to 155 C.) the 

 various points capable of growth are shown to be 

 unequallv sensitive, that of the root being most 

 easily destroyed. — Maurice Lenoir : Somatic kinesis 

 in the aerial stem of Equisetum arvense. From the 

 facts described it would appear that the fundamental 

 substance of the chromosome is the nucleolin ; the 

 chromatin is derived from it. — Mile. Marguerite 

 Larbaud : The anatomy of flowers of the same species 

 at different altitudes. A detailed comparison of 

 plants of Silene inftata grown at about sea-level 

 and at 2000 metres altitude. — Gabriel Bidou : An 

 artificial musculometer. — Clement: Vaney and Jean 

 Pelosse : Origin of the natural coloration of the silk 

 of Bombyx mori. The colouring matter from the 

 silk and that derived from the leaves of the mulberry 

 tree give identical absorption spectra in alcoholic 

 solution. This confirms the view of Conte and 

 Tevrat that the silk cocoons derive their colour 

 from the pigments of the leaf serving as food for the 

 silkworms. — M. Aron : The development of the 

 primary sexual characters in Triton cristatiis. Hypo- 

 thesis on its determinism. — P. Bouin : Dipyrenid of 

 the sperm in certain double spermatogeneses is 

 obtained by a heterotypical mitosis produced in the 

 course of development. — A. Pezard : The idea of the 

 " seuil diffeventiel " and humoral interpretation of 

 the gynandromorphism of the bipartite birds. In 

 these "birds the plumage is divided into two parts 

 following the plane of symmetry of the body, one half 

 having a male appearance, the other female. The 

 reproductive organs show corresponding pecuharities. 

 — A. Desgrez, H. Bierry, and F. Rathery : A balanced 

 food regime and diabetic acidosis. — Pierre Goy : 

 Microbial physiology and the accessory growth 

 factor. It appears to be impossible to determine 

 Vitamine B by studying its action on the growth 

 of yeast. — Charles Lebailly : The duration of the 

 contagious period in aphthous fever. 



Cape Town. 



Royal Society of South Africa, May 17. — Dr. J. D. F. 

 Gilchrist, president, in the chair. — J. R. Sutton: The 

 control of evaporation by the temperature of the air. 

 The rate of evaporation from the surface of the water 

 in a metal gauge sheltered by a louvred screen increases 

 as the air temperature rises above that of the water. 

 In the space* just above the water the relative 

 humidity is much higher than, while the temperature 

 there is about the same as, that of the free air. The 

 results illustrate the general law that water vapour 

 diffuses along the relative humidity gradient. — Sir 

 Thomas Muir : Note on a determinant with factors 

 like those of the difference-product. — J. Moir : Colour 

 and chemical constitution, Pt. XVII. The azo dyes 

 and other monocyclic colours. By spectro photo- 

 graphic means, and replacing N by CH and eliminating 

 N or CH, the azo dyes are calculable from oxy- and 

 amino - benzaldehyde, previously calculated in Pt. 

 XIII. Ouinone and its imines all have six bands, 

 one pair for neutral, another pair for acid, and a 

 third pair for alkahne solution. 



NO. 2749, VOL. I io] 



Official Publications Received. 



The Carnegie Foundation for the Advancement of Teaching. 

 Bulletin -V" 10 : Education in the Maritime Provinces of Canada. 

 By Win. S. Learned and Kenneth C. M. Sills. Pp. iv + 50. (New 



Department of the Interior: United States Geological Survey. 

 Bulletin 726-E : Geologic structure of Parts of New Mexico. By 

 N. H. Darton. Pp. vii + 173-275. (Washington: Government Print- 

 ing Office.) ., „ M „. . ., „ 



Classified List of ■Smithsonian Piililications available lor Distribution, 

 April la, 1022. Compiled by Helen Munroe. (Publication 2670.) 

 Pp vi+30 (Washington: Government Printing Office.) 



Department of the Interior: United States Geological Survey. 

 Professional Paper 12:i-G : The Flora of the Woodbine Sand at Arthurs 

 Chill Texas By Edw. W. Berry. Pp. 153-181. Professional Paper 

 129-B ■ Geology of the Lower Gila Region, Arizona. By Clyde P. 

 Ross Pp 183-197. Professional Paper 120-1 : The Flora of the 

 Cheyenne Sandstone of Kansas. By Edw. W. Berry. Pp. 199-22o. 

 (Washington : Government Printing Office.) 



Smithsonian Institution: United states National Museum. Con- 

 tributions from the IS .National Herbarium. Vol. 22, Part 6: 

 Grasses of British Guiana. By A. >. Hitchcock. Pp. x + 439-515. 



Cornell Ciii\.'r-itv v-ri, ultural Experiment Station. Memoir 46 : 

 \ ci-isMiicitii.ii oi th. i ulmated Varieties f Barley. By It. G. 

 Wiggans. I'|i :a;.;-i;.o. Memoir 4o: The Biology of Ephydra 

 Subopaca Loew. By Chili Ping. Pp. 555-616. Memoir 50 • The 

 Relative Growth-promoting Value of the Protein of Coconut Oil Meal, 

 and of Combinations ,,i it with Protein from various other Feeding 

 Stuffs. By I. \ MiMi.i.i! and l\ M. Fronda Pp 61. -633. 

 Memoir 51- Tin Hog l.,,u-e. ILematopinus mus Linne : Its Biology, 

 Anatomy and Hi-t.,l,,gy. V, I..,,,,., Flu,, ,„ ,-. Pp. 635-743. Memoir 

 52 : studies iii Pollen, with special Refer, nee to Longevity. By H. E. 

 Knowlton. Pp. 745-793. (Ithaca, N.Y. : Cornell University.) 



Diary of Societies. 



FRIDAY, July 7. 

 Kovu. SOCIETY of MEDICINE, at. 5.— Dr. A. F. Hess: The Effect of 

 Light in the Prevention and Cure of Rickets. 



tuesday, july 11. 



International Neo-Malthusian and Birth Control Conference , 

 (at Kingsway Hall, King-wax, W . .21, at 10— Dr. C. \. Drysdale: 

 Presidential' Addre,s.-At 2.30.— Dr. .lane L Hawthorne: Birth 

 Control as it alb et- the Pom I. Cecil: i :'. Motlieiliood. — Mrs. B. I. 

 rirvsii.i! •'• The In.lhiduil iieltb. Mai. Mi-- I' W Mellu Browne : 

 II,, I, mime, \ ' > oi Birth Control In Clan,,- M Huxley: | 

 Birth Control from the Point of View oi a Woman G\ tnc-ologist^ 



Society for tip mi pv of Inebriety (at 11 Chandos street. W.l), 

 at 4.— C. .1. Bond: The Influence of Hospitals on Temperance 

 Reform (Presidential Address). 



WEDNESDAY, July 12. 



IN-TFKX.TIOXAT, NEo-M U.THl'SIAN ANP BIRTH CONTROL CONFERENCE 

 (at King-way Hall. Kingsway. \\ r 21, at lO.-Dr. C. \ .Drysdale • 

 The Criterion of 



View of Death Rates 

 Wieksell : The Crux 

 tion and the Birth Ra 



. 3. Dunlop : A Malthusian : 



n Duration of Life.— Prof. K. 



Prof. It. Miehels : Einigra- 



, n l-liimoto : The Population 

 icier- : The Historical Aspect of 



Bin! i Control and Organised 

 nous Section. 



t , ,,f Medicine), at 5.— Prof. 



id Arthritis. 



THURSDAY, July 13. 







INTERNATIONAL NEO-AlALTHXSIAN AND BIRTH CONTROL CONFERENCE 

 ,at Kingsway Hall. Kingsway. \\<\Z,. at 10. Prof . \\ . Mae 

 Bride: Birth Control and Bilingual Law.— 51. Pollock : Th 

 Problem of the Unfit.— Prof. W. F. Willcox: Economic CompetitiOL 

 between Vnieriean liaces. Negro ami White— Mi.ss Mary YWhsor 

 The Cost to the State of the Socially Handicapped and the Socially 

 Unfit— Prof P \V Whiting: Relation of Kcccut Advances i 

 ccnctics to the British ( out."! Programme— Dr. H. Hart : Diffe 

 ential fertility in I, ,wa.— Pr.,1. K. Dnnlap : Psychological I-actol 

 in Birth Control.— At 2— H. Cox: International Aspects of Birth 

 Control — Dr A. Nvstrom : Overpopulation of the Earth and its 

 Dangers —J O. P. Bland : The Far Eastern Population Question.- 

 \1,.~ \nn, Kcinie.h : Birth Control in the I nited state-.- -Pro 

 Isoo Abe ■ The Birth Control Movement in Japan.— Dr. F. Gold 

 stein : Birth Control the Saving of Civilisation. 



FRIDAY, July 14. 



INTERNATIONAL NEO-MALTHUSIAN AND BIRTH CONTROL CoXFFIU'.NC 



"(at Kingswav Hall, Kingsway, W.C2I. at 10.— Dr. C. K. -Millard 

 Birth Control ami the Fertility Question.— Dr. A. Nystrom : Th 

 Necessity for abolishing Laws against. Preventive Measures.- 

 Dr H Rohleder: Neo-Malthusianisin from the .Medical Standpoint. 

 — Dr 'D. R. Hooker : Effect of X-rays upon Reproduction in the 

 Rat. ' 



PUBLIC LECTURE. 



WEDXESD A Y, July 12. 

 ROYAL SOCIETY of MEDICINE, at 5.— Prof. H. S. Birkett : The Develop- 

 ment of Trans-Atlantic Rhino-Laryngology (Semon Lecture). 



