150 



VENOMS 



liquid venom, with 0-017 gramme to 0-055 gramme of dry residue. 

 Ill all the experiments of this physiologist, the proportion of dry 

 residue varied from 9 to 38 per cent, of the liquid venom excreted 

 by the reptile. 



A Lachesis lanceolatus (Fer-de-lance) from Martinique, of 

 medium size, when both of its glands were squeezed, furnished 

 me with 0-320 gramme of liquid venom, and 0-127 gramme of dry 

 extract. 



Two large Cerastes vipers, from Egypt, yielded me, one 

 0*123 gramme, the other 0-085 gramme of liquid venom, which, 

 after desiccation, left respectively 0-027 gramme and 0019 gramme 

 of dry residue. 



Under the same conditions, a magnificent Crotalus confluentus 

 (Mottled Eattle-Snake), for which I was indebted to the kindness 

 of Mr. Ketlie, of New York, yielded, two months after reaching 

 my laboratory, 0'370 gramme of liquid venom and 0-105 gramme 

 of dry extract in a single bite. 



