INDEX. 775 



PAQB 



Physical Culture 663 



Physical Features of the Colorado Valley. (Illustrated) 531, 670 



Physiology of Authorship 93 



Plants, Carnivorous 252 



Poisoning with Hemlock 250 



Pollution of Elvers 378 



Popular Verdict, A 542 



Porcelain Clay 760 



Potato, its Origin 127 



" Beetle. (Illustrated) 704 



" Bugs, are they poisonous ? 700 



Prairie Gopher 637 



Premature Criticism 124 



Pi-iestleyana 122 



Progress of Natural History 749 



Pulse, Infrequency of. 381 



Pyrophone, The. (Illustrated) 444 



Kainfall, Forests and 207 



Kecent Earthquakes 377 



" Polar Explorations 320 



Eelativity of Truth 488 



Research, Scientific, Endowment of 354, 437 



Respiration and Versification 510 



Respirator, Denayrouze's 251 



Rivers, Pollution of 378 



Salicylic Acid 680 



Savagism and Civilization 195, 332 



Science and the Book of Genesis 487 



" allaying National Antipathies 764 



" and Religion 66, 301, 573 



Scientific Culture 513 



" Education, Expensiveness of. 746 



" Prophecy 17 



" Research, Endowment of 354, 437 



Scotland, Summer Temperature of 506 



Sea- Anemones. (Illustrated) 1 



Secchi on Solar Spots 633 



Sense of Taste, Experiments on 634 



Sensitiveness of Silver-Salts to Light 766 



Sexual Cerebration 287 



Sirenia 760 



Sleep and Digestion 628 



Snake-eating Snake . . 765 



Social Experiment 619 



" Feeling in Dogs 507 



" Science Association 365 



Solar Disk, Temperature of 763 



Sound, The Motions of. (Illustrated) 410 



Speech, Infirmities of . 463 



