SUBJECT INDEX 



755 



Moonlight, influence on photoblastism, 

 523 



Morse function, 3 



Multiplicity, 11 



Murex, ocellus, 640 



Mya, dark adaptation, 664 

 intensity discrimination, 669 

 latency of photic response, 664 

 light adaptation, 664 

 neuronal photoreceptors, 638 

 summation, 668 



Myoglobin, energy transfer, 56, 333 



Mytilus, ocelli, 638 



N 



Nano- (multiplying prefix), 136 



Naphthoquinone, 328 



Naphthyl chains, 95 



Nassa, photosensitivity, 640 



Nauplian ocelli of crustaceans, 644 



Nautilus, eye, 639, 641 



Negative accommodation of cephalopod 



eyes, 641 

 Neides, dermal photosensitivity, 643 

 Nematodes, photosensitivity, 631 

 Nemer tinea, photosensitivity, 631 

 Nereis, ocelli, 632 

 swarming, 634 

 Nerilla, eyespots, 632 

 Nerve-impulses, optic, 694-605 

 invertebrate, 594-598 

 single-fiber, 586, 595-605 

 characteristics, 595-596 

 in dark adaptation, 596-597 

 in light adaptation, 597 

 on- and off-responses, 598, 601-603 

 specificity in, 601-605 

 vertebrate, 509-605 

 spatial summation, 599 

 Neural surgery effects, on compound-eye 

 development, 653 

 in leeches, 636 

 in Nereis, 634 

 in oligochaetes, 636 

 Neuronal photoreceptors, defined, 624 

 in fly maggots, 643 

 in hemichordates, 662 

 in Mija, 638 

 in oligochaetes, 635 

 in tunicates, 663 

 Nicotiana, 528, 529, 533-535, 539 



tabacum, 526 

 Nigella, 528 

 Nitrate, 527 



accumulation, 444 

 assimilation, 444 

 reductase, 450 

 Nitrate reduction, 295, 323, 443 



Nitrite, 450, 460 

 Nitrogen, 327 



in skotodormant seeds, 536-537 

 Nitrogen fixation, 460 

 Nitrourea, 323 

 Nitzchia, 328, 367 

 Nonbonding (n) electrons, 72, 90 



interaction, 91 

 Nonbonding n-g or fi-ir transitions, 84, 92 



blue shifts in polar solvents, 91, 115 



identifying characteristics, 90, 91 



possible occurrence in chlorophyll, 115 



singlet-triplet separation, 91 

 Non-sugar assimilates, 455 

 Nonsulfur purple bacteria, 298, 299, 306 

 "Normal" coordinates, 9 

 Notonecta, flicker detection, 668 



growth of compound eye, 653 

 Nutrient solutions, 275, 527 



O 



Occlusible tapetum, 648-649 

 Ocelli, of Acanthopleura, 637 



of acarinids, 645 



of Acmaea, 640 



of Acridium, 645 



aggregated in Xenos, 646 



of AmaroHcium larvae, 662 



of amphineurans, 637 



of Artemia, 644 



of arthropods, 643-646 



of barnacles, 644 



bifocal, 645 



of BotryUus larvae, 663 



of Cardium, 638 



of chilopods, 645 



composite, 657 



of Corephium, 637 



of diplopods, 645 



of Dytiscus larva, 634 



of Fissurella, 640 



of Haliotis, 634, 640 



of Helix, 640 



of insects, 645-646 



of leeches, 636 



of Lima, 638 



of Limidus, 634 



of medusae, 628-629 



of Murex, 634, 640 



of Mytilus, 638 



of Nereis, 632, 634 



of Patella, 634, 640 



of pedipalpids, 645 



of phalangids, 645 



of Phyllodoce, 634 



of Planaria, 629, 630 



of Potamides, 638 



of Prorhynchus, 629 



