Genetic variation 1608, 2024 

 Genetically different 1235 

 Genetics 24, 1235, 1460, 1461, 2231 



, role of 1286 



Genotypes, narrower range of 2025 



Genus 4 25 



Geochemical indicators 2153 



Geochemistry 2079, 2080 



Geographic distribution 20, 24, 96, 104, 152, 363, 892 



variation 1263, 1568 



Geological factors 489 



Georgia 58, 59, 413, 679, 680, 681, 1693, 1787 



Germ cell 136 



Geukensia 1911 



Gibberellic acid (GA) 916 



Gill area 1427 



cavity 626 



cilia 523, 1881 



, efficiency of, at removing particles independent of pumping rate, oxygen 



consumption and oxygen tension 19 36 



color, lightening of 1227 

 _ enzyme 544 



epithelia/gill epithelium 612, 1021 



filament 110, 114, 152 



_ metabolism, hibernation in 869 



musculature 115 



surfaces 944 



tissue 476, 527, 544, 871, 872, 924, 1029, 2090 



_ , excised 1895 



_ respiration 1879 



used as much or more O2 than at high salinities 1880 



Gills 110, 111, 112, 119, 232, 263, 286, 331, 332, 346, 451, 534, 543, 613, 



626, 629, 769, 809, 810, 824, 941, 944, 1049, 1056, 1352, 1413, 1451, 1501, 1527, 



1548, 1555, 1569, 1709, 1747, 1759, 2154 



, function of 947 



increase in oxygen consumption 1555 



, single pair of 782 



Glancy-Wells solarium method 299 

 Gland 337 



, red 136 



Glass 418 



containers may contain toxic substances 2030 



Glen Cove, N. Y. 899 



Glial cells 1060 



Globulin, immune serum prophylaxis 56 8 



type 2056 



Glossary 311, 1345 

 Gloucester Harbor, Mass. 46 8 



702 



