with a fertilizer drill, at the rate of 75 to 100 bushels per acre also is 

 good. But by far the best results have been obtained from the use of 

 formalin, which may be applied at the rate of one ounce to one gallon 

 of water (1-128), or in even weaker solutions. Some onion growers 

 in the Connecticut valley, where the crop is grown extensively and 

 and with great success, occasionally use the formalin stronger than the 

 amounts recommended, but this results in injury to the crop. i-ioo 

 parts, which is sometimes used, is capable of killing almost anything, 

 and in our opinion is too strong to apply to seed. 



Fig. 2. Formalin tank, block tin pipe and valve. (See Fi^. i.) 



By the aid of certain devices, formalin can be easily and cheaply 

 applied when the seed is sown. Tests have shown that about 1200 

 feet of drill can be treated with one gallon of formalin solution. One 

 of the first devices used for this purpose was made by the writer, and 

 consists of a tank attachment. At the bottom is fastened a block tin 

 tube about a quarter of an inch in diameter, to which is attached a 

 valve to regulate the flow of formalin. This tube can be easily bent 

 to discharge at any desired point and yet has sufficient stiffness to 



