An Account of certain Organisms in the Liquor Sanguinis. 141 



from age, and as the outlines of the corpuscles appear quite as 

 distinct now as they did soon after the blood was drawn, it seems 

 probable that this microscopic evidence of human bloodshed will be 

 equally unmistakable twenty or even fifty years hence, provided due 

 care continues to be exercised in its preservation from moisture and 

 external violence. 



In conclusion, I submit, that the results of my experiments 

 above narrated jorove that, since the red blood-globules of the pig 

 (4 2V0), the ox (tAt)? the red deer (t32t)j the cat (470^), the horse 

 (tsW), the sheep (3^bVo)> and the goat (^^^ of an inch), are all so 

 much smaller than even the ordinary minimum size of the human 

 red disk, as measured in my investigations, we are now able hy the 

 aid of high powers of the microscope, and under favourable circum- 

 stances, to positively distinguish stains produced by human blood 

 from those caused by the blood of any of the animals just enume- 

 rated, and this even after the lapse of five years from the date of 

 their primary production. 



No. 1620, Chestnut Street, PHrLADELPHiA. 



VI. — An Account of certain Organisms occurring in the Liquor 

 Sanguinis. By William Osler, M.D. 



Plate LXXIV. 



In many diseased conditions of the body, occasionally also in per- 

 fectly healthy individuals and in many of the lower animals, careful 

 investigation of the blood proves that, in addition to the usual 

 elements, there exist pale granular masses, which on closer inspec- 



EXPLANATION OF PLATE LXXIV. 



Fig. 1. — Common forms of the masses from healthy blood. (Ocular 3, Objec- 

 tive 5.) 

 „ 2. — A mass from healthy blood, in saline solution, showing stages of deve- 

 lopment; a, at 10 A.M.; h, at 10.30 a.m.; c, at 11 a.m. (Ocular 3, 

 Objective 7.) 

 „ 3.— Mass from blood of young rat (in serum) in full development, after two 



hours' warming. (Ocular 3, Objective 7.) 

 „ 4. — Mass (young rat) -with blood-corpuscles about it, to show tlie relative 



sizes. (Ocular 3, Objective 5.) 

 ^^ 5. — Some of the developed forms as seen with No. 11 Hartnack. (See text.) 

 „ 6.— Form watched for four hours. (Ocular 3, Objective 9.) 

 „ 7. — Form watched for five hours. (Ocular 3, Objective 9.) 

 ^^ 8. — Small vein in connective tissue from the back of a yoimg rat, showing 



the corpuscles free among the red ones. (Ocular 3, Objective 7.) 

 ^^ 9. — Small vein from the connective tissue of a rat (in serum), showing cor- 

 puscles and developed forms. (Ocular 3, Objective 9.) 



