INDEX TO FIGURES 847 



PAGE 



Osmotic work, diagram to illustrate 157 



Ostwald, portrait of 321 



Oxygen produced at maximum absorption of chlorophyll (Engelmann) 562 



Oxyhsemoglobin, dissociation curve as affected by salts (Barcroft and Roberts) 621 



,, ,, at different temperatures (Barcroft and 



Hill) 



,, t ,, in relation to hydrogen ion concentration 



Pancreas, functional changes in (Kiihne and Lea) - 335 

 ,, ,, ,, under secretin and under vagus stimulation 



(Babkin, etc.) 347 



Paraganglia and sympathetic, Elliott's diagram 712 



Pavlov, portrait of - 370 



Pecten, anatomy of - 536 



eye of (Dakin) 518 



Pfeffer, portrait of - 147 



Phase relation in colloidal systems - 14 



Phosphate solutions, curves for preparing - 204, 205 



Photographs of nucleus by ultra-violet light 10 



Pituitary extract causing secretion of milk (Mackenzie) . 718 



Portrait of Ai'rhenius 172 



Claude Bernard (Lhermitte) . - 686 



Berzelius 302 



Burdon-Sanderson 661 



,, Descartes (Franz Hals) - 38 



Ehrlich - 11 



., Faraday 171 



Emil Fischer 261 



Gaskell (Mottram) 678 



Regnier de Graaf 371 



Graham (G. F. Watts) - 76 



Harvey (Mierevelt) 665 



Helmholtz 519 



van't Hoffin 1889 33 



1899 34 



Lavoisier 604 



Leeuwenhoek 666 



,, Ludwig - 685 



,, John Mayow 601 



John Napier of Merchiston 39 



Ostwald 321 



Pavlov - 370 



Pfeffer - 147 



Priestley 602 



Ringer - 206 



,, Sherrington 489 



Moritz Traube - 112 



