SUBJECT INDEX 



895 



Luciferase, 571 

 Luciferin, 511 

 Luminescence, 56, 58 



of dinoflagellates, 567 



of Gonyaulax, 567 



emission spectrum of, 567 



of the ocean, 567 



rhythm of, 567-570 



Macrosiphum 



critical photoperiod of, 618 

 effect of continuous darkness on, 



621 

 effect of temperature on, 618 

 the photoperiodic response of, 

 618 

 Maleic hydrazide, 384, 385 

 Mammals 



activity rhythms in, 791-800 

 Marine animals 



reproductive cycles, 625-637 

 Median eminence, 729, 730 

 Metatetranychus 



effect of night interruption on, 



621 

 effect of temperature on the 

 photoperiodic response of, 618 

 Metriocnemus knabi, 601, 604-607, 

 614,622 

 adjustment of life cycle to en- 

 vironment, 615 

 continuous darkness, 614 



effect on termination of dia- 

 pause, 614 

 critical photoperiods in, 603 

 dark period interruption, 613 

 effect on photoperiodic re- 

 sponse, 613, 614 

 day length, natural, and the con- 

 trol of diapause of, 615 

 day-length response of, 619 

 diapause in, 620 

 effect of diapause, 615 



effect of night interruption on, 620 

 effect of temperature on, 608, 

 617,618 

 photoperiodic response, 609, 

 618 

 inductive cycle, 610-613 



requirement for terminating 

 diapause in, 611 

 latitude of, 619 

 moonlight effect, 615, 616 



on photoperiodic response, 616 

 pupation in, 602, 620 

 response to continuous darkness, 



621 

 response to day length, 617, 619, 



620 

 response to light intensity, 615- 

 617 

 Metriocnemus larvae 



effect of photoperiod on growth 

 of, 610 

 Midge, pitcher-plant, see Metriocne- 

 mus knabi 

 Migrants, transequatorial 



influence of day length on testes 

 of, 759-765 

 Migration, 442 



in birds, 442, 682, 683, 693-697, 

 699, 701, 702, 704, 705, 

 711-713; see also Re- 

 jractory period 

 annual stimulus for, 679, 680 

 day length and duration of re- 

 sponse, 684-686 

 day length and initiation of, 



680,681 

 day length and regulation of, 



679-681,698 

 experiments on, 680 

 inherent rhythm and timing of, 



692, 703 

 physiological responses pre- 

 ceding, 680, 681 



