214 



ALPHABETICAL COMPILATION 



Nitrogen mustards B I 7. 

 Seminal fluid B I 2. 

 Sulfhydryl groups B I 4, II 7. 

 Uranyl nitrate B II 5. 

 Urethane B I 8, II 6. 

 Usnic acid B I 6, II 3. 

 X-rays B I 5, II 2. 



TABLE 18 



OXYGEN CONSUMPTION (CM^/hOUR/cm' EGGS) 



From Ballentine 1940 b 



To these references should be added: Shapiro (1935c; lor eggs kept four weeks in 

 the laboratory; Clowes and Krahl (1936a), Keltch and Clowes (1947) who give 

 for both fertilized and parthenogenetic eggs oi A. punctulata 2.7 times the unfertilized; 

 Robbie (1946b) who gives F/Unf. = 4.5 at 23°; Shearer (1922a) for Echinus micro- 

 tuberculatus. A list similar to Ballentine's is given by Krahl (1950, Table I). For 

 Psammechinus miliaris, immature, unfertilized and fertilized see Borei (1948). 



RESPIRATION 



A. Eggs 



I. Increase of Oj Consumption (Table 18) 



/. After Fertilization and Parthenogenesis. — First described by Warburg (1908) for 

 Arbacia lixula as 6 to 7 times more for the fertilized than for the unfertilized egg. 

 For A. punctulata, 3 to 4 times (Loeb, 1910; Loeb and Wasteneys, 1911a; Loeb, 

 1913a, p. 27; etc.). For the parthenogenetic egg o{ Strongylocentrotus lividus as about 



