vii 



PAGE 



Chapter 7. F. E. W eiss 40 



Malformations and Injuries. 



Alalformations arising as sports or by malnutrition. 

 Healing of wounds. Injuries due to lightning, frost, etc. 

 Harmful effect of smoke and fog. 



Chapter S. Wilfrid Robinson 57 



Fungi as a Cause of Disease in Plants. 



Common fungi, mushrooms, toadstools and moulds. How 

 they live. Saprophytes and Parasites. The " Damping-off 

 disease of Seedlings caused b\' the fungus Pythium. Life 

 Story, means of spreading and living in the soil, pre- 

 cautionary measures. 



Chapter q. Vi'ilfrid R ohms on 65 



Diseases of Roots and Tfbfrs. 



Fingers-and-Toes of Turnips, Cabbages, etc. Habits and 

 life history of the fungus. Remedial treatment. " Limmg 

 01 the soil. etc. Similar diseases, e.g.^ Black Scab or Wart 

 Disease of Potatoes, *' Spongy Scab," etc. 



Chapter to. IVilfnd Rob in. son 73 



A Disease of Leaves, Shoots and Tui^>ers. 



The Late-Blight disease of potatoes. Symi^toms and 

 means of spreading. Diseased tubers and the wintering of 

 the fungus. Treatment of the disease, sprayiiig and the use 

 of resistant varieties. 



Chapter ii. Wilfrid Robinson 81 



Diseases of Leaves and Shoots i.contd.). 



Black-Leg or Wilt Disease of Asters. Tomato-leaf rust 

 or mould. Leaf-b]otch of Cucumber. ]\Iildews of Roses, 

 Gooseberries, etc. 



Chapter 12. Wilfrid Robinson 8g 



Diseases of Leaves (contd.). 



Rusts. The ^\'heat Rust. Life Story of the fungus, 

 relation to the Barberry. The Mint Rust and Hollyhock 

 Rust as examples of other Rust diseases. 



Chatter 13. A. D. Imms 07 



Injurious Animals other than Insects. 



Injurious and beneficial Animals. Birds and the need 

 for scientific investigation Avith reference to their food at 

 different seasons of the year. Eelworms and more especially 

 the Stem Eehvorm and the Knot Root Eelworm. Pul- 

 monate Alolluscs (Snails and Slugs). The Black Currant 

 Gall Mite. 



