SIXTEENTH ANNUAL MEETING. 105 



what I w anted and I was quite ready to tell any one who could 

 work out my problem, and I asked for a petroleum oil so 

 treated as to he soluble or miscible in plain water without 

 niakini^- into an enuilsion or any previous preparation in the 

 hands of the farmer. 



And so I got into correspondence with a number of manu- 

 facturers of insecticides and their chemists and the hrst product 

 was "Kill-O-Scale," prei)ared by Dr. P. Karutz for a Baltimore 

 firm, and that was excellent but too high in price. And then 

 Dr. Karutz prepared for me a number of different oils, all of 

 whicli were given a test. And the B. G. Pratt Company of 

 New' York also began to experiment and emulsified for me 

 Texas oil, asphalt base oil, paraffine base oil and I had half a 

 dozen dift'erent kind of soluble preparations out of which 

 "Scalecide" was finally evolved. 



Now I don't mind admitting that in my official capacity I 

 am to a large degree responsible for the production of "Scale- 

 cide" as it stands today; but I regret that I must confess to a 

 woful lack of business ability in that I failed to secure for 

 nnself even a penny-worth of commercial interest in it. I 

 know that I am credited w^ith a greater business sense and that 

 my advocacy of the soluble oils is charged more to a desire to 

 line my own pockets than to benefit farmers; but then I have 

 met this suspicion all my official life and am still living on my 

 salary only. 



Since that time Dr. Karutz has perfected "Target Brand" 

 emulsion for the American Horticultural Distributing Com- 

 pany, and yet more recently a "soluble oil," for the Thomsen 

 Chemical Company of Baltimore. 



All these "soluble oils" are based on a petroleum "dis- 

 tillate" from which all the paraffin, vaseline and lighter naph- 

 thas have been taken. It will be remembered that we found 

 the vaseline to be the real source of danger in the undiluted 

 crude, hence in the soluble oils it is eliminated altogether, and 

 its place is taken by a vegetable or animal oil which is more or 

 less completely mingled with the mineral oil. 



"Kill-o-Scale" and "Scalecide" are very similar in com- 

 position and are based on brown oils, carrying all their natural 

 sulplun-. To "Kill-O-Scale" additional sulphur is added ; to 



