INDEX. 773 



PAGE 



On the Correctness of Photographs 710 



Ophthalmia, Contagious 377 



Ornament, Evolution in. (Illustrated) 266 



Ornithological Land-lubber 375 



Oxidation retarded by Molecular Vibration 255 



Oyster, Natural History of. (Illustrated) 1, 159 



Paces of the Horse. (Illustrated) 129 



Personal Equation. (Illustrated) 385 



Photographs, On the Correctness of 710 



Photography and the Chemical Centennial , 115 



Physiological Basis of Mental Culture 183 



Pitcher-Plant 379 



Plants growing within Eggs 634 



" how they are distributed , 636 



" Insect-Catching 766 



" Respiration of 60 



Poisoned Soils 638 



Portuguese Agriculture 378 



Potato-Disease and Drought 126 



Pottery of Mound-Builders 380 



Priestley, Joseph 90 



Rabbit, A Rare Species of . . . .' 252 



Rain-Drops on the Sea. (Illustrated) 732 



Reason against Routine in teaching of Language 322 



Reform, Social, Science and 504 



Relations of Women to Professions 454 



Reply to Critics 422 



Reproduction of Burnt Records 763 



Respiration of Plants 60 



Retardation of the Earth's Rotation 743 



Rights of Originality 114 



River Hydraulics 237 



Robin, Usefulness of the 124 



Rotation of the Earth 250 



Royal Institution and Society of Arts 655 



Society, Origin of 759 



.. 



School Hygiene 633 



Science and Social Reform 504 



" from the Pulpit 734 



Seeds, Vitality of. 760 



Sexes, Future Relations of the 614 



Siamese Medicine 378 



Smith, Dr. J. Lawrence, Sketch of. (Portrait) 233 



Social Evolution 604 



" " Causes of 616 



Society of Arts and Royal Institution 655 



Soils, Poisoned 638 



Some Superstitions of Hydrophobia 174 



Sonorous Sand 764 



Species, A Lost, rediscovered 762 



" Transmutation of. 253 



Spencer, Herbert, and the Doctrine of Evolution 20 



Spider, The Triangle. (Illustrated) 641 



"Spiritual Pirates " 599 



Sponge, A Fresh-Water 758 



Steam, Waste Heat of, saved 763 



Struggle for Existence 376 



