SCIENTIFIC PROCEEDINGS. 



Abstracts of reports. 1 



First meeting. 2 



Laboratory of Physiological Chemistry of Columbia University, 

 at the College of Physicians and Surgeons. February 25, 1903. 



1. "An experiment to show the difference in effect between 

 the simple cutting of the cervical sympathetic and the 

 removal of the superior ganglion," with demonstrations : S. 

 J. MELTZER. 



The author presented a rabbit in which the cervical sympa- 

 thetic had been cut on one side, and the superior ganglion had 

 been removed on the other side. Both pupils were of the same 

 size. About two hours before the demonstration one hind leg was 

 tightly constricted and 1 cc. of adrenalin solution injected into it 

 (peripheral to the ligature). On removal of the ligature the pupil 

 on the side from which the ganglion had been excised became 

 greatly dilated, while the pupil on the other side remained unaffected. 



2. "Differentiation of monkey blood from human blood by 

 the precipitin serum test," with demonstrations : JAMES 

 EWING. 



It has been known for some time that the serum of an animal 

 immunized against a particular alien blood will precipitate proteids, 

 not only in the particular blood used in the immunization, but 

 also, to a lesser degree, in the blood serum of closely related 

 animals. Thus the serum of a rabbit immunized against ox blood 

 will precipitate proteids not only in ox blood but also in sheep and 

 goat blood, etc. It is only when the anti-serum is diluted to a 

 considerable degree that the precipitate forms only in the partic- 

 ular blood used in the immunization. This dilution, as a rule, 

 must be as high as 1-50. In a series of tests with various human- 



1 The authors of the reports have furnished the abstracts. The secretary has made 

 only a few abbreviations and minor alterations in them. 



2 Reprinted from Science, 1903, xvii, p. 468 and American Medicine, 1903, v, p. 707. 



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