An Index of Blood-relationship 3o 



haemolyse cat corpuscles, at other times it exerted no effect, whilst 

 London (1902, p. 56) states they are not haemolysed. Daremberg 

 (1891) found dog serum to haemolyse human corpuscles in 9 minutes. 

 The corpuscles of the rabbit and guinea-pig are haemolysed in 

 2i minutes (Daremberg); Buchner (1893, p. 122), Ehrlich and 

 .Morgenroth (lit. 1900), Flexner and Noguchi (1902) state that rabbit 

 corpuscles are rapidly haemolysed. Buchner stated that the corpuscles 

 of the guinea-pig were more slowly haemolysed than those of the 

 rabbit, but this does not appear to have been noted by Ehrlich and 

 Morgenroth, and Flexner and Noguchi. Rat corpuscles are haemolysed 

 (Ehrlich and Morgenroth). 



The blood corpuscles of the Ungulata are haemolysed by dog serum, 

 the bloods tested being those of the horse, pig, and sheep (haemolysed 

 in 1 minute, Daremberg), ox (haemolysed in 9 minutes, Daremberg), 

 sheep and goat (Ehrlich and Morgenroth). 



Feline Sera: Friedenthal (1900) cites an experiment in which 

 he transfused the blood of the domestic Angora cat into the vessels 

 of Felis ocelot, and from the latter into the cat. He chose animals 

 of similar size, put their blood circulations into communication, 

 and allowed their bloods to mix until about one-half of their blood 

 volume had been exchanged. The cat remained perfectly well after the 

 operation, the ocelot unfortunately died from the effects of prolonged 

 narcosis. He pertinently remarks to these experiments " Also getrennte 

 Familien, gesondertes Blut." Friedenthal and Lewandowsky found 

 the lethal dose of cat serum for rabbits to be the same as that of the 

 dog (see above). 



Experiments with cat serum in vitro have shown that it does not 

 haemolyse the blood corpuscles of Felis ocelot and Felis jaguarundi, and 

 vice versa (Friedenthal, 1900), nor of other cats (Friedenthal and 

 Lewandowsky, 1899). Cat serum was found to haemolyse the corpuscles 

 of the rabbit (F. and L. 1899, London, 1902, p. 56), hedgehog, and frog 

 (Friedenthal, 1900). 



Rodentia. 



Rabbit Serum : Transfusion effected between two rabbits or be- 

 tween the rabbit and hare is not followed by ill effects (Friedenthal, 

 1900, and Friedenthal and Lewandowsky, 1899). 



The experiments with rabbit serum in vitro ai'e not concordant, 

 apparently for the reason that some observers experimented with 

 washed, others with unwashed corpuscles. Working with unwashed 



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