330 



Quantitative Precipitin Tests 



The results recorded here will be considered at the end of the 

 succeeding series. 



Tests with Anti-Pig Serum (11. in. '02). Series III. 



The following series is recorded for the reason that it shows how an 

 antiserum may at times give apparently aberrant results. The antiserum 

 was obtained exactly like the preceding ones by injecting a rabbit intra- 

 peritoneally with pig serum. Why the antiserum should have behaved 

 in this manner we cannot explain unless it be that it belonged to the 

 class we have described as " milky," although we should not have used 

 it if it had shown any marked opacity. The antiserum reacted most 

 promptly with its homologous blood and would be classed as very 

 powerful. These results should serve as a warning to always use 

 controls in medico-legal work with the precipitin method. 



]ilood of 

 Uitgutata 



Pig 



Horse 



Ox 

 486 Cobus unetuosus 



Sheep 



483 Bangifer tarundus 

 502 Cervus porcinus 

 243 Capra megaceros 

 Primates 



298 Chimpanzee 



299 Gorilla 

 Man 



254 Ourang 



364 Cynouephalus mormon 

 501 sphinx 



431 Ateles geolfroyi 

 Carnlvora 



362 Genetta tigrina 

 579 Lutra vulgaris 



Felis domesticua 

 367 Ursus tibetanus 

 359 Canis aureus 



Canis familiiiris 

 103 Felis tigris 



300 Felis caracal 

 366 Procyon lotor 



Date 



1'recipituin 

 amount 



Percentage 



20 (uoncentr. serum) 



433 Ceutetes ecaiulatus 



3. i. 02 



Oil 



25 



