118 BOARD OF AGRICULTURE. [Pub. Doc. 



complaints that were brought in from private individuals 

 that their trees were injured. A chemist was employed and 

 set at work, the committee getting all the hints from other 

 chemists possible for the chemist they employed. Pro- 

 fessor Fernald was consulted, Dr. Wellington, Professor 

 Shaler and others, and hints were gotten from all sources 

 possible, and this chemist put them in practice and tried 

 everything, first one thing and then another and another, 

 and the outcome was arsenate of lead. This morning per- 

 haps undue credit was given to the chemist who did the 

 work. He did the work, but he got hints from educated 

 men everywhere. Probably a hundred different compounds 

 were suggested and tried, and none of them excelled Paris 

 green until we struck the arsenate of lead, and that tilled 

 the bill. 



In regard to the pump, we found in the immense amount 

 of spraying we were obliged to do, on trees one hundred 

 feet high, bushes and all kinds between, over hundreds of 

 acres, we must have better facilities for spraying than we did 

 have. We found a man willing to work under our direc- 

 tion, getting hints wherever he could, from experienced 

 men, scientific men and practical men, and put them 

 together for this spraying machine. That man was Mr. E. 

 C. Ware. Mr. Ware made this machine for the State of 

 Massachusetts, and the State of Massachusetts paid the bill, 

 as it paid all the bills for the discovery of the arsenate of 

 lead ; and when the committee made the contract with these 

 men, it was agreed that any discovery they made under the 

 pay of the State of Massachusetts should not be patented, 

 but should be reserved for the use of the people of the 

 country, free, and that is the condition of the arsenate of 

 lead and of the Ware pump. If you can make a Ware 

 pump, you have a right to make it. If } r ou can make 

 arsenate of lead, you have a right to make it. 



With reference to Mr. Bowker's arsenate of lead, he did 

 not invent it. He puts together the invention that the State 

 of Massachusetts made, and if he can put it together better 

 than anybody else, he is the man you ought to buy it of. 

 If he is not, then you ought not. 



