DIRECTIONS FOE TREATING THE SEED. 



THE JENSEN HOT-WATEE TREATMENT. 



"The hot-water treatment consists in immersing the seed which 

 is supposed to be infected with smut, for a few minutes in scald- 

 ing water. The temperature must be such as to kill the smut 

 spores and the immersion must not be prolonged so that the 

 heat would injure the grain or embryo concealed within the 

 seed coats. If the water is at a temperature of 132|F. the spores 

 will be killed, and yet the immerson, if not continued beyond 

 *. fifteen ninutes, will not in the least injure the seed. The smut 

 * spores will possibly be killed by a ten minutes' immersion. A 

 fifteen immersion, however is recommended. The temperature 

 must be allowed to vary but little from 132^, in no case 

 rising higher than 135, nor falling below 130. To insure these 

 conditions when treating large quantities of seed the following 

 suggestions are offered: 



Provide two large vessels, as two kettles over a fire, or boilers 

 011 a cook stove; the first containing warm water (say 110 130), 

 the second containing scalding water (132 J). 



The first is for the purpose of warming the seed preparatory 

 to dipping it into the second. Unless this precaution is taken, 

 it will be difficult to keep the water in the second vessel at a 

 proper temperature. 



The seed which is to be treated must be placed a half bushel 

 or more at a time, in a closed vessel that will allow free entrance 

 and exit of water on all sides. For this purpose a bushel basket 

 made of hea v vy wire could be used, within which spread wire 

 netting, say 12 meshes to the inch; or an iron frame could be 

 ma.cle at a trifling cost, over which the wire netting could be 



