460 



SCIENCE 



[N. S. Vol. LIV. No. 1402 



health oiEcials and the opportunities for 

 ■using such training." Dr. John A. Ferrell, 

 International Health Board, Eookefeller 

 Foundation. 



THE LANE MEDICAL LECTURES OF 

 STANFORD UNIVERSITY 



Dr. L. Emmett Holt, emeritus professor of 

 pediatrics of the College of Physicians and 

 Surgeons of Columbia University, will de- 

 liver the Lane Medical Lectures in the 

 Stanford University Medical School, San 

 Francisco, from December 5 to 10. The lec- 

 tures will take place daily at 8 p. m. The 

 topics will be as follows: 



I. The general subject of nutrition — its import- 

 ance in relation to healtii and growth, to prog- 

 ress in school, to resistance to infection and in 

 the management of acute and chronic disease. 

 II. The food requirements of the healthy child 

 after infancy. 



III. The function in diet of fat, protein, carbohy- 

 drate and mineral salts, and the conditions 

 which determine the amounts needed. 



IV. Vitamines — Their function in nutrition and the 



new point of view which they have given re- 

 garding food values. 

 V. The practical problem of improving the nutri- 

 tion of children including the prevention and 

 treatment of malnutrition. 



Dr. Holt will also give a clinic on child- 

 ren's diseases on Wednesday, December 7, at 

 11:30 A.M., at the Medical School. 



THE TORONTO MEETING OF THE AMERICAN 

 SOCIETY OF NATURALISTS 



The thirty-ninth annual meeting of the 

 American Society of Naturalists will be held 

 in Toronto, Canada, on Thursday, December 

 29, 1921, under the auspices of the University 

 of Toronto. 



Headquarters of the society will be the 

 King Edward Hotel, 37-55 East King Street, 

 where the American Society of Zoologists and 

 the Botanical Society of America will also 

 have headquarters. Members desiring accom- 

 modations at headquarters should make reser- 

 vations early. Accommodations may also be 

 obtained at other hotels and probably also at 

 the dormitories of the univErsity and near-by 



fraternity houses. Information concerning 

 these accommodations will be given later in 

 Science or in the final announcement in De- 

 cember. 



On Thursday forenoon a limited number of 

 short papers by members and invited guests 

 will be given. Members desiring to present 

 papers should send the titles to the secretary 

 not later than November 24, giving estimated 

 time of delivery, and requirements of lantern, 

 charts, blackboard space, etc. It should be 

 remembered that the primary interest of the 

 society, as expressed in resolutions, is in evo- 

 lution in its broadest sense. 



Thursday afternoon is. to be devoted to the 

 annual symposium. The general subject in 

 1921 is " The Origin of "Variations," and the 

 following speakers have been secured: 



H. S. Jennings — Variation in Uniparental Eepro- 

 duction. 



A. F. Blakeslee — ^Variations in Datura due to 

 Changes in Chromosome Number. 



H. J. MuUer — Variation due to Change in Indi- 

 vidual Genes. 



C. B. Bridges — The Origin of Variations in 

 Sexual and Sex-Limited Characters. 



E. A. Emerson — The Nature of Bud Variations 

 as Indicated by the Mode of their Inheritance. 



M. r. Guyer — Serological Reactions as a Prob- 

 able Cause of Variations. 



The naturalists' dinner will be given on 

 Thursday evening. The annual address of 

 the president will follow. 



The American Association and most of the 

 affiliated societies will meet in Toronto. At- 

 tention is called to coojieration of the natur- 

 alists with the Botanical Society of Amer- 

 ica and the American Society of Zoologists, 

 whereby the latter two societies list their 

 papers on subjects of greatest interest to the 

 naturalists on the day preceding the natural- 

 ists' program. 



Section G- (Botany) of the American Asso- 

 ciation will present on Wednesday afternoon 

 a symposium on the " Utility of the Species 

 Concept," in which the speakers are Charles 

 F. Millspaugh, George H. Shull, E. A. Harp- 

 er, Guilford B. Eeed, and E. C. Stakman. 



The American Society of Zoologists has ar- 



