20 



BULLETIN OP THE 



infinity, with the corollary of finite velocity, passing by con- 

 tinuity from an accelerated into a retarded velocity as the centre 

 of the particle passes the attracting point. 



Mr. J. J. Woodward read a paper 



ON THE SIMILARITY BETWEEN THE RED BLOOD-CORPUSCLES OP 

 MAN AND THOSE OP CERTAIN OTHER MAMMALS, ESPECIALLY THE 

 DOG ; CONSIDERED IN CONNECTION WITH THE DIAGNOSIS OP 

 BLOOD-STAINS IN CRIMINAL CASES. 



(Published in full in the American Journal of the Medical Sciences, Jan- 

 uary, 1875.) 



(abstkact.) 



The writer, after deprecating the mischievous tendency of a 

 recent paper " On the value of high powers in the diagnosis of 

 blocd-stains," shows that the common supposition that a certain 

 small but constant difference exists between the average diameter 

 of the blood-corpuscles of man and of the dog, which might 

 serve as the basis of a distinction in legal cases, is not borne 

 out by an examination of the original papers of Gulliver and 

 Welcker, whose measurements are those vulgarly relied upon in 

 favor of this view, and also that it is not in accordance with the 

 actual facts of the case. He then details the precautions which 

 should be adopted to secure accuracy in such measurements, and 

 gives the foUov/ing statement of the results of his own measure- 

 ments of the blood of five men and five dogs. 



Measurements of Human Red Blood- Corpuscles from five 

 Individuals. 



