INDEX TO FIGURES 849 



PAGE 



Semicircular canals - 528 



Sensory impulses, analysis and integration (Head) - 504 



Sherrington, portrait of 489 



Sign of electrical charge of colloidal particles, apparatus for determining 91 



Silicic acid gel, water content (van Bemmelen) 4 



Sodium chloride, action of, on heart (Ringer) 207 



Spirogyra under ultra-microscope 6 



Spleen, nerve plexus around artery (Retzius) 402 



Starch produced at place of maximum absorption of chlorophyll 563 



Statocyst of Pterotrachea (Claus) 527 



Stepping, produced reflexly (Sherrington) - 499 



Stretching, reaction of muscle to (Straub) - 436 



String galvanometer, diagram of 642 

 effect of tension of string 638, 639, 640 



figure of 641 



Strychnine, conversion of depressor to pressor reflex by 697 



,, inhibition of dilators converted to excitation by 698 



Submaxillary gland, electrical changes in 351 



Successive induction (Sherrington) 153 



Surface tension in soap film 48 



origin of, from internal pressure 50 



,, ,, torsion method of measuring 49 



Sweet pea plants, to illustrate Mendelian inheritance (Bateson) 293 



Sympathetic endings in skeletal muscle (Boeke) 544 



Synthesis of glycerol-glucoside by emulsin - 300 



Synthetic diet insufficient for growth (Hopkins) 254 



Table of indicators - 189 



Temperature, effect of, on adsorption 45 



,, ,, on rate of heart beat 43 



,, of body changed by warming and cooling heat centre 



(Barbour) 458 



Thermopile of A. V. Hill 443 



Tonus of respiratory centre 419 



Tradescantia, staminal hairs, normal and stimulated 5, 21 



Traube, portrait of - 112 



u 



Ultra-microscope, diagram of light rays 80 



,, figure of the instrument - 



,, gels under 



illuminated field as seen - 



,, nerve cells under 470 



,, , appearance of Spirogyra under - 6 



Ultra-violet absorption by anthracene 549 



light, photographs by - 



Ureter, electrical change in 651 



54 



