478 MISS W. H. SAUNDERS ON THE 



The plants were grown for two months, and at the flowering 

 stage all the results were equal and even with the Control. The 

 AVestoran treatment resulted in a checked thin crop, but the 

 plants reached maturity. 



2. Cape Pelargoniums and Adiantums (maidenhair ferns) were 

 repotted from 60's into 5-inch pots with equal parts loam and 

 treated manure. The treatments used for mustard in Expeii- 

 ment 1 wei-e repeated on twenty-two species of Pelargonium and 

 on Adiantimi henslowiamtm. 



All grew quite healthily, and at the end of seven weeks the 

 treated plants looked as well as the Control. 



3. At Swanley, melons were potted with a compost of equal 

 parts treated manure and loam, and grown in a temperature of 

 60-80° F. For each treatiuent 1 quart of liquid was used with 

 4 ozs. and 3 ozs. of the chemical. 



Westoran at both strengths killed the plants, but those treated 

 with the following behaved normally compared with the Control. 

 They were kept until pot-bound : — 



Miscible Fusel oil. Heavy Tar oil and Cresol. 



Miscible Pyridene lOi^/o. Fusel oil. 



Miscible oil, Heav}'. Xeutral Blast-furnace oil. 



Miscible oil, Ligbt. Tetrachlorethane. 



Miscible Pyridene 5 "/ij. Miscible Pyridene 15 ";'ij Molar. 



Kerosene. Soluble Tar oil. ' 



Higher Pyridene bases. Blast-furnace Creosote. 



Cresol. Green Tar oil. 



Carbon Tetracbloride. 



4. Cucumbers, for which the methods of No. 3 were employed, 

 were treated with : — 



Non-miscible Tar oil, 

 Non-miscible Pyridene 



with perfectly normal results. 



Conclusions. 



« ■ 



The experiments show that the investigations led to two very 

 successful treatments: — 



1. The surface-di-essing of manure with Green Tar oil or 



with Neutral Blast-furnace oil and soil, 



2. The application of Tetrachlorethane. 



Both treatments successfully kill maggots in the manure and 

 are harmless to plants. 



The Tar oil has a permanent effect in being resistant to rain, 

 while the effect of Tetrachlorethane lasts only while the liquid 

 vapourises, and in time the poisonovis vapour escapes. 



