TABLE OF CONTENTS. XXI 

 CHAPTER XVI. 



Copper Aceto-Ausenite (Emerald Green, Paris Green), Copper Arsenite 

 (Scheele's Green) — Copper Silicate — Copper Carbonate — Bouillie Borde- 

 laise Celeste — Verdigris Copper Acetate — Various Bouillies. 



page 



9(1. Aceto-Arsenite of Copper --.-.-... 270 



Definition ------- 270 



Manufacture ------------ 270 



Properties (action on plants) --------- 270 



Freshly prepared bouillies versus bouillies from commercial green in 



powder 270 



Behaviolir of arsenic in soil ^ ------- - 270 



Tlie aeeto-arsenite free from sodium arsenite innocuous to plants - - 270 

 Whitehead's harmless doses, recipes for : — 



Apple-trees - - - 271 



Pear-trees - . . - - 271 



Gooseberry bushes ---------- 271 



Plum-trees 271 



Currant bushes - 271 



Action on insects - - - - - - - - - - - 271 



Uses ------ 271 



Methods of use - - - . - - 271 



1. In dry state 271 



2. As bouillies - - - 271 



Precautions in use - . . . 272 



Arsenic not absorbed by plant 272 



French law interdicts arsenious acid' and compounds - . - - 272 



Time of spraying ----------- 272 



Spraying with arsenites during fertilisation kills bees, etc. - - - 272 



Spraying with arsenites suitable for rainy countries . - - - 272 



Profit incidental to use of arsenites - 272-3 



Use against apple scab and potato disease ------ 273 



Use against insects, apple weevil, cotton weevil, etc. - - - 273-6 



Treatment by powders ---------- 274 



Recipe for same ----------- 274 



Treatment with bouillies - - .-.---. 274 

 Use of same inte?- alia against : — 



Colorado beetle, etc. - - - - - - - - - 274 



Codlin mo'h, etc. ----- - - - - 275 



Evesham moth, etc. - - 276 



Acari - - - - - 276 



97. Copper Arsenite, CujAs^Og. 



Preparation (Gaillot's recipe) - . 276 



Properties - - - 276 



Use - - - 277 



98. Copper Silicate, CuSiO... 



Preparation - - "- - - 277 



Properties - 277 



Use - - - - - 277 



99. Carbonate of Copper, CuCO:j. 



Preparation, formula for 277 



Tests for normal product 277 



Properties 277 



Neutral bouillie 277 



Various manufacturing hints and instructions . . - . . 278 



Uses - - - 278-9 



Use to disinfect purchased onions and tubers ------ 279 



100. Bouillie Boudelaisk Celeste. 



Preparation ------------ 279 



Formula - - - - - - 279 



