SCIENCE AND INDUSTRY. 
Crop Losses. 
(EWEN MACKINNON, B.A., B.Sc.) 
Many of the present developments in agriculture are the direct 
outcome of the recent world-wide war. At first the greatest need of 
the combatants was ammunition; this gave place to a demand for men, 
and finally the most vital need was for food. This question of food 
supply was at first thought to be the means by which Germany might 
be brought to submission. Many optimists were of the opinion that 
Prate I. 
Peach Leaf Curl, a fungous (Exoascus) disease that causes too much loss in Australia. It f 
; _ can he entirely prevented by proper spraying. : Tia 
398 
