144 



SCIENCE 



[N. 8. Vol. XXXIX. No. 995. 



shown in a number of cases.^ The behavior 

 of the color pattern in successively regenerated 

 feathers suggests, as a working hypothesis, 

 that the pattern factor or gene is possibly rep- 

 resented in each follicle by a strictly limited 

 amount of material, and that when this is 

 used up the pattern is lost. 



4. The secondary sexual feathers of the 

 male, such as the saddle hangers, only appear 

 as adult plumage. The same follicles which 

 bear these feathers produce, as juvenile 

 plumage, undifferentiated body feathers. The 

 formation of these secondary sexual feathers 

 is not necessarily dependent upon any normal 

 moult. If the juvenile feather is removed 

 from the follicle the next feather produced 

 by that follicle will be the secondary sexual 

 feather, and not a feather of the juvenile type. 

 After that all further regenerations are of the 

 sexually differentiated feather. 



These investigations are being continued. 

 A complete report, with illustrations, covering 

 the progress of the work to date will shortly 

 be published elsewhere. 



Eaymond Pearl, 

 Alice M. Boring 



THE AMESICAN SOCIETY FOB PHABMA- 



COLOGY AND EXPEBIMENTAL 



THEBAPEUTICS 



The fifth annual meeting of the Pharmacolog- 

 ical Society was held in Philadelphia on Monday 

 and Tuesday, December 29 and 30, at Jefferson 

 Medical College and the University of Pennsyl- 

 vania. The scientific meetings were auspiciously 

 inaugurated by a joint session of the three so- 

 cieties which form the Federation of American 

 Societies for Experimental Biology, comprising 

 the Physiological Society, tlie Society of Biolog- 

 ical Chemists and the Pharmacological Society. 

 The program of this joint meeting on Monday 

 morning was opened by a short address of the 

 president of the Physiological Society, Dr. S. J. 

 Meltzer, as chairman of the federation. The 

 title of his address was ' ' Theories of Anesthesia. ' ' 



The following papers were read and discussed: 



"Phlorhizin Glycosuria before and after Thy- 

 roidectomy, ' ' by Graham Lusk. 



"Studies in Diabetes: (1) The Effect of Dif- 

 ferent Compounds of Glycogenesis; (2) The Mech- 



2 Some of which were shown in the charts used 

 in connection with the reading of this paper. 



anism of Antiketogenesis, ' ' by A. J. Einger and 

 E. M. Frankel (by invitation). 



"Some Problems of Growth: (a) The Capacity 

 to Grow; (6) The EQle of Amino Acids in 

 Growth," by L. B. Mendel and T. B. Osborne. 



' ' Further Studies in the Comparative Biochem- 

 istry of Purine Metabolism, ' ' by Andrew Hunter. 



"Changes in Fats during Absorption," by W. 

 E. Bloor. 



' ' Immunization against the Anti-coagulating 

 Effect of Leech Extract," by Leo Loeb. (Bead 

 by title.) 



' ' Anaphylaxis in the Cat and Opossum, " by 0. 

 W. Edmunds. 



" Vividiffusion; Eeport on Preliminary Eesults, " 

 by J. J. Abel, L. S. Eowntree and B. B. Turner. 



' ' A Method of Dialyzing Normal Circulating 

 Blood and Some of Its Applications, " by C. L. V. 

 Hess (by invitation) and H. McGuigan. 



"A Biological Test for Iodine in the Blood," 

 by A. Woelfel and A. L. Tatum (by invitation). 



' ' Further Studies of the Excretion of Acids, ' ' 

 by L. G. Henderson and W. W. Palmer (by invi- 

 tation). 



The second scientific session was also held at 

 Jefferson Medical College on Monday, December 

 29, from 2 to 5 p.m., and the following papers 

 were read: 



"Uranium Glycosuria," by G. B. Wallace and 

 H. B. Meyers. 



"A Comparative Study of the Vascular Ee- 

 sponse of the Kidneys in Animals Nephritic from 

 Uranium Nitrate," by W. deB. MacNider. 



"The Production of Glycosuria by Zinc Salts," 

 by W. Salaat and M. Kahn. 



' ' Further Observations on Caffein Glycosuria, ' ' 

 by W. Salant and M. Kahn. 



"Studies upon the Long-continued Feeding of 

 Saponin," by C. L. Alsberg and C. S. Smith. 



' ' The Effect of the Inhalation of Ether upon 

 the Irritability of the Voluntary Peripheral Motor 

 Mechanism," by J. Auer and S. J. Meltzer. 



' ' The Irritability of Muscle and Motor Nerve 

 in Chloroform Anesthesia," by T. S. Githens and 

 S. J. Meltzer. 



' ' The Cessation of Eespiration in Deep Ether 

 Anesthesia and its Possible Eolation to the Action 

 of Ether upon the Peripheral Motor Mechanism," 

 by T. S. Githens and S. J. Meltzer. 



"The Anesthetic Tensions of Ether Vapor for 

 Man," by W. M. Boothby (by invitation). 



"Studies in the Absorption of Drugs," \>j R. 

 A. Hatcher and Cary Eggleston. 



