SHEFFIELD SCIENTIFIC SCHOOL 139 



numerous valuable treatises on scientific agriculture, 

 wrote, in June 1865 : 



Your opinion of the Maine Reports is highly gratifying, 

 inasmuch as I fancy you mean what you say, which could 

 not be said of all the flattering remarks which have been made. 



He continued: 



Your offer to be of service emboldens me to ask if you may 

 not sometime have students who would find good practice in 

 analyzing samples of sup. phos? — and so could have some 

 analysis done at small charge? Perhaps I mentioned before 

 that we have an association of a dozen or so of farmers who 

 have put up a bone mill and make some sup. phos., as yet for 

 their own use, but if the article serves well, propose to furnish 

 others with a reliable article. I have directed the manufacture 

 thus far, and have trials going on in the field of samples made 

 in various methods. ... If I had the requisite skill, facility 

 and time, would like to analyze these products and compare 

 results with those of the field, and so better judge which — on 

 the whole — is preferable ; and it would be something to know 

 the chemical composition of what I know to be honestly made 

 (if not skilfully), and of good materials. 



Mr. Goodale wrote again on November 17, thanking 

 Professor Johnson for analyses received, and said: 



I shall be delighted to send you specimens of products and 

 of materials after we get to work — if your assistants want 

 practice in analyzing. I don 't know how it is with others, but 

 working pro bono publico butters my parsnips very lightly — • 

 not quite to my taste. 



Soon after his own return to this country, in 1855, 

 Professor Johnson suggested Dr. Pugh to the trustees 

 of the Pennsylvania State Agricultural Society as the 



