Bakewell. — On the Red Corpuscles of the Blood. xxxvii 



sucli as 1 10*15 has been employed, but never, so far as the writer can discover, 

 a continuous heat of 98-6. 



The most convenient method of experimenting is to get some of the small 

 bottles used by homoeopathic chemists for their globules, and fill them with 

 the mixture of blood and serum or albumen. By filling them quite full, and 

 then corking very slowly and carefully, all air may be excluded. They should 

 then be stitched into a long piece of calico, and tied round the body under all 

 the clothes. The larger vaccine tubes have also been employed. They can be 

 kept in a case, and one taken out at intervals for examination. There need be 

 no hurry to use the blood immediately after the bird is killed, as the blood 

 retains all its vital properties for twelve hours in a temperature under 70 F, 



Description of Plate XXIX. 



A. Blood of goose mixed with the albumen of a hen's egg, and kept at the 

 normal temperature of the human body for eight hours. 



B. Hen's blood and albumen of hen's egg whipped up with air, then kept 

 in a closed tube for eight hours at the temperature of 98-6 F. (364 C.) 



C. Blood of goose mixed with albumen of hen's egg, kept at 98*6 F. for 

 twenty hours. 



D. The same kept for same period in about six times the bulk of its own 

 serum. 



E. D treated with dilute acetic acid. 



F. Hen's blood kept for about forty-eight hours in albumen of hen's egg^ 

 at 98-6 F. 



All the above were drawn from the specimens actually under examination, 

 magnified 550 diameters. 



b3 



