154 



ALPHABETICAL COMPILATION 



TABLE 15 



CONCENTRATIONS OF ANAESTHETICS FOR FERTILIZED ARBACIA PUNCTULATA EGGS 



VISCOSITY 



From Heilbrunn, 1928, Colloid Chemistry of Protoplasm, p. 206, 

 amended from Heilbrunn, 1920 b, p. 311 



Concentration of Concentration of 



solution found to Length of solution found to Length of 



Reagent decrease viscosity exposure cause coagulation exposure 



Vol. % in minutes Vol. % in minutes 



Anaesthetic cone. Lethal cone. 



has no effect. See Respiration BIB. Phenyl urethane saturated solution inhibits 

 respiration 60%, one fourth saturated inhibits 12%, one tenth saturated has no 

 effect (see Respiration B II 6) (Barron, Nelson, and Ardao, 1948). Sperm are more 

 resistant to anaesthetics than eggs, but they can be anaesthetised (Blumenthal, 

 1928). Sperm lose fertilizing power after one half hour in 0.2 M ethyl urethane; 

 lose motility after two hours (E. B. H., 1930 unpub.). 



Other Species (additional) and General References 



Cornman, ig^o a.. Tripneustes esculentus, Lytechinus variegalus with carbamates. 



Cornman, Skipper, and Mitchell, Jr., 1951. Tripneustes esculentus, urethane. 



Fisher, 1942. General. 



Fiihner, 1904. Paracentrotus lividus and Psammechinus miliaris with alcohols etc. 



R. S. Lillie, 1916c. Theory oj Anaesthesia. 



Monne, 1947. Ps. miliaris, etc.; anaesthetics on structure of protoplasm. 



Runnstrom, 1928b, 1930. P. lividus, A. lixula with ethyl and phenyl urethanes. 



