Mabch 11, 1910] 



SCIENCE 



397 



" A Pitot Tube Steam Meter," E. H. Lockwood, 

 New Haven, Conn. 



" Production Engineering," A. A. Hamerschlag, 

 Pittsburgh, Pa. (Presented by the secretary.) 



" Recent Improvements in Ore Concentration 

 Machinery," R. H. Richards, Boston, Mass. 



"A Parallel Rule," H. E. Wetherill, Philadel- 

 phia, Pa. (Read by title.) 



" The Photographic Lens as an Jlingineering In- 

 strument," E. H. Berry, East Orange, N. J. 

 (Read by title.) 



WEDNESDAY A.M., DECEMBEB 29 



" The Changes of the Wind with Altitude," A. 

 J. Henry, Mount Weather, Va. (Presented by 

 W. J. Humphreys.) 



" Wind Pressure and Velocity," S. P. Ferguson, 

 Hyde Park, Mass. 



" The Relation of Wind to Aaronautics," A. 

 Lawrence Rotch, Hyde Park, Mass. 



" Turbulent Surface Winds," W. J. Humphreys, 

 Washington, D. C. 



" Aerodynamics," A. M. Herring, New York, 

 N. Y. 



" Vertical Air Currents and their Office in Sup- 

 porting a Moving Aerofoil," F. W. Very, West- 

 wood, Mass. 



" The Center of Pressure on Arched Surfaces," 

 M. B. Sellers, Fireclay, Ky. (Read by title.) 



" Interference of Aeroplane Surfaces due to 

 Grouping," M. B. Sellers, Fireclay, Ky. (Read by 

 title.) 



"Vagaries of Air Currents," A. T. Atherholt, 

 Philadelphia, Pa. (Read by title.) 



" The Pneumodynamic and the Thermodynamic 

 Function," J. M. Siebel, Chicago, 111. (Read by 

 title.) 



" General Design for an Aerial Machine of High 

 Speed and Efficiency," David Todd, Amherst, Mass. 

 (Read by title.) 



" Some Applications of the Laws of Aerial Vis- 

 cosity to Problems of Aviation," F. W. Very, 

 Westwood, Mass. (Read by title.) 



■WEDNESDAY P.M., DECEMBEE 29 



Vice-presidential address' — " The Profession of 

 Engineering and its Relation to the American 

 Association for the Advancement of Science," G. 

 F. Swain, Boston, Mass. 



" The Development of the Modern Textile Mill," 

 C. J. H. Woodbury, Boston, Mass. 



" The Present Status of Aerial Navigation," ' 



'Published in full. Science, February, 1910. 



' To be published in full in Science. 



Octave Chanute, Chicago, 111. 



The meetings of the section were well attended, 

 the papers were valuable contributions and the 

 discussions interesting. Those responsible for the 

 program appreciate the efforts of the members 

 who prepared and presented the papers and feel 

 that the meeting was in all respects very en- 

 couraging. 



G. W. BiSSELL, 



Seoretary 

 East Lansing, Mich. 



THE AMERICAN PEYSIOLOGWAL SOCIETY 

 The twenty-second annual meeting of the Amer- 

 ican Physiological Society was held in the physi- 

 ological laboratories of the Harvard Medical 

 School, Boston, Mass., December 28-30, 1909. 

 Sixty-nine of the one hundred and sixty members 

 of the society were in attendance. The officers of 

 the meeting were W. H. Howell, president, and 

 R. Hunt, secretary. 



The following papers and demonstrations occu- 

 pied the six scientific sessions: 



JOINT MEETING WITH SECTION K PHYSIOLOGY AND 



EXPEEIMENTAL MEDICINE AMEEICAN ASSOCIA- 

 TION FOR THE ADVANCEMENT OF SCIENCE 



Address of the retiring vice-president — " Chem- 

 ical Regulation of the Body-processes by Means 

 of Activators, Kinases and Hormones," W. H. 

 Howell. 



Symposium on Internal Secretion: 



" A General Review of the Chemical Aspect 

 of Internal Secretion," R. H. Chittenden. 



" The Internal Secretion of the Pancreas," 

 W. G. McCallum. 



" Our Present Knowledge of Thyroid Func- 

 tion," S. P. Beebe. 



" Metabolism after Parathyroidectomy," J. V. 

 Cooke. 



" Physiological Consequences of Total and of 

 Partial Hypophysectomy," H. Gushing. 



JOINT SESSION WITH THE AMERICAN SOCIETY OF 

 BIOLOGICAL CHEMISTS 



" On the Reversible Reaction for the Liberation 

 of Carbonic Acid from the Blood in the Lung," 

 L. J. Henderson. 



" The Action of Certain Substances on the 

 Respiratory Center," A. S. Loevenhart (with W. 

 E. Grove). 



" Some Reactions of Lipase of Human Pancre- 

 atic Juice," H. C. Bradley. 



