Xxiv TABLE OF CONTENTS. 



PACK 



Water emulsion - - 298 



Salt-water emulsion - - 299 



Example 299 



Ingredients of several emulsions --..--.. 299 



Ingredients of four stable emulsions 300 



Fish-oil emulsion r 300 



Milk emulsion 300 



Insecticide and metallic salt emulsion 300-1 



Use of petroleum emulsions against : — 



Fungi 301 



Coleoptera 301 



Hymcnoptera .......... 302 



Lepidoptera ----------- 303 



Hemiptera - - - - 304 



Homoptera - - - - - - - - - - - 304 



Woolly aphis - 305 



Coccides ---.--.--.. 306 



Diptera - 306 



Acari ..----..---. 307 



111. Petroleum Spirit. 



Preparation - - - - ,307 



Action on plants - - - - 307 



Action on insects ----------- 307 



Use - - - 307 



Petroleum spirit emulsions --------- 307 



Formula, recipe for - 307 



Use against insects 307-8 



112. Vaseline. 



Action on plants ----------- 308 



Action on insects - - - - 308 



Uses - - - - 308 



Ward's recipe for vaseline emulsion ------- 3O8 



Use against insects 308 



113. Acetylene, C.^Ho. 



Preparation - - - - 308-9 



Properties 309 



Action on plants 309 



Action on fungi ..--.-.---- 309 



Action on insects ----------- 309 



Uses - - . - 309 



Use against fungoid diseases 309 



Destruction of insects by 310 



CHAPTER XIX, 



Carbon Compounds (continued) — Chloroform — Carbonic Oxide — Methyl Alcohol 

 — Ethyl Alcohol — Amylic Alcohol — Glycerine (Tki-Hydkic Alcohol) — 

 Ether — Mercaptan — Formic Aldehyde — Acetic Acid — Oxalic Acid. 



114. Chloroform, CHCL - . - - 311 



Preparation - 311 



Properties 311 



Action on plants 311 



Trials to disinfect seed-corn against formol and ammonia - - - 311 



Stimulating action of small doses .------- 311 



Mrs. Latham's experiments ----.---- 311 



Johanssen's experiments .-.-.---- 311 



Blooming by - . - . - 311 



Action of vapour on spores --------- 312 



