INDEX 



111 



Starch formation, influence of 

 light, 48, 49, 50 



— — influence of temperature, 



51 



— — influence of colour, 52 



— presence in plant, 46 



— presence in cotyledons, 86 



— tests for, 46, 47 



Stem, passage of manufactured 

 food through, 62 



— passage of water through, 18 



— structure of, 19 

 Stomata, 29 

 Sugar, cane, 58, 59 



— formation from starch, 60 



— grape, 58, 59 



— inversion of, 60 



— reducing, 59 



— tests for, 58 



Tbmpbratueb, action on absorp- 

 tion, 4 



— action on starch formation, 



51 



— increase due to respiration, 



77 

 Testa, 82 

 Transpiration, 23 



Vaseline, 28 



Water, absorption of, 3, 4 



— ascent of, 17 



— a factor in germination, 82 



— hardness of, 2 



Wood, passage of water through, 

 18 



THE END 



Printed by BALLANTYNE, HANSON & Co. 

 Edinburgh &^ London 



