XXX TABLE OF CONTENTS. 



CHAPTER XXIV. 



Carbon Compounds {co7itinned) — Tobacco (Nicotinic Tobacco Juice) — Quassia — 

 Hellebore — Pybethra — Delphinium (Larkspur) — Strychnine — Nux Vomica 

 — Walnut Leaves — Glue— Cutch — Aloes. 



paop 



143. Tobacco 371-5 



llecipeB for tobacco insecticides (7) 371-2 



Properties 372 



Action on plants . - - 372 



Action on insects ----------- 372 



Uses 372-5 



Fumigation 372 



Use in open air --------- - 372-3 



Spraying with tobacco juice 373 



Use against insects --------- 372-5 



Nessler's tobacco insecticide 371-4 



Sajo's recipe 374-5 



Sajo and Czerhati's recipe 374 



Ahlisch's recipe - - 374 



Mohr's recipe - . - 375 



Guozdenovic's recipe 375 



Noel's method ----------- 375 



Sirodot's method 375 



144. Quassia Amara 



Insecticides with quassia basis ------- 375-6 



Numerous recipes ---------- 375-6 



Properties 376 



Action on plants ----------- 376 



Klein's solution - - 376 



Action on insects - - 376 



Uses - - - . . . 376-7 



Mouillefert's experiments on vines . . - - - . . 377 



A German quassia mixture against phylloxera 377 



Recipe against Phytoptus Ribis 377 



145. Helleboke RoiiT. 



Preparation of liquid insecticides . - 377 



Several recipes --.-.---.-- 377 



Uses - - . 377 



Against insects .-.-.----.- 377 



Against sparrows 377 



Against rodents 377 



146. Pyretuba. 



Preparation of pyrethra powder 378 



Preparation of pyrethra extracts -------- 378 



Soap extract (recipe) -.-..----- 378 



Alcoholic extract (recipe) 378 



Alcoholic and ammoniacal extract (recipes) ------ 378 



Composition of pyrethra insecticides (recipe) ------ 378 



Cupric insecticide bouillie (recipe) 379 



Alcoholic and carbon disulphidc extract (recipe) ----- 379 



Pyrethra petroleum emulsion 379 



Properties of pyrethra - - 379 



Action on plants - - - 379 



Action on insects 379 



Uses 379-81 



Use against insects 379-81 



14'i Strychnine. 



Source ------------- 381 



Uses ----- 381 



Use against insects -..---.-.- 381 



