;io INDEX TO VOL. IV 



PAOE 



Rocks, Igneous, Genesis of 306 



, Natural History of (A. Harker) 306 



, Vol. I.: Composition, Texture, and Classification (P. Iddings) . . 319 



Rogers, A. W. and Du Toit, A. L. An Introduction to the Geology of 



Cape Colony 514 



Rubber Cultivation, Para, Science and Practice of ... 393, 593 



Synthetic 609 



Russell, E. J. Factors which Determine Fertility in Soils . . . 353 



Schools, The Future of Science in our 417 



Schwarz, E. H. L. The Organisms of the Soil 150 



Science, An Imperial Institute of, and London University .... 677 



, The Future of, in our Schools . . . . . . . . 417 



Scott, D. H. Studies in Fossil Botany. Vol. II., Spermaphyta . . . 349 

 Senter, G. Outlines of Physical Chemistry . . . . . . .169 



Sewage Disposal Problem 177 



Sex and Sexual Characters 457 



, Causation of(E. R. Dawson) 165 



, Determination of, Chromosomes in relation to 570 



, Mendelian View of 457 



, Recent Work on the Determination of 90 



Snakes, Venomous : On the Poison of and the Methods of Preventing Death 



from their Bites (J. Fayrer and Others) 348 



Soddy, F. The Interpretation of Radium 699 



Soil, Bacteria and Protozoa as Factors in Fertility of 353 



forming Organisms 153 



, Organisms of 150, 505 



, Results of Partial Sterilisation of 357 



, Woodland, Productivity of 504 



Soils, Factors which Determine Fertility in 353 



Sollas, W. J. Palaeolithic Races and their Modern Representatives : 



Magdalenian Man and the Eskimo 16 



Chronology and Recent Discoveries 376 



Species, The Making of (D. Dewar and F. Finn) 519 



Spectra, Absorption, an Atlas of(C. E. K. Mees) 700 



Spitta, E. J. Microscopy : The Construction, Use and Theory of the Micro- 

 scope . 343 



Stewart, A. W. Recent Advances in Organic Chemistry . . . .167 

 Stonehenge and other British Stone Monuments Astronomically Considered 



(N. Lockyer) 695 



Stone Implements of South Africa (J. P. Johnson) 172 



Telegraphy, The Transmission of Photographs by 332 



Termiten Die, oder Weissen Ameise?i (K. Escherich) 171 



