152 LETTER-FILES OF S. W. JOHNSON 



the fields of Agricultural Science, now white with a harvest 

 for which the reapers are all too few. 



A few letters written to Professor Johnson in con- 

 nection with "The Crops," as they were familiarly 

 called, are given a place here : 



(J. B. L. TO S. W. J.) 



Rothamsted, St. Albans, 

 February 3, '70. 



Dear Sir, On calling at the Agricultural Societies' Rooms 

 at Hannover Square this week, I received a copy of your book 

 "How Crops Grow." How long it has been there I do not 

 know, but I hasten to thank you for it, and I have so far gone 

 over its contents as to satisfy me that it is by far the best 

 summary of information in this subject which has yet been 

 published. . . . Believe me, Yours truly, J. B. Lawes. 



(G. C. C.TOS.W. J.) 



Ithaca, April 7th, 1870. 



My dear Johnson, I received a few days ago, a copy of 

 "How Crops Feed." It is of course good excellent It 

 explores the ground gone over so thoroughly, in fact, that, if 

 introduced as a text book, you haven't left much for a fellow 

 to lecture about. It came just in time for me to begin with 

 it next term, in my class in Agricultural Chemistry, and I 

 shall use it, even though it leaves me no opportunity to display 

 my own wisdom. 



Your reference to my book in the Preface to "Fresenius" is 

 very kind, as well as the notice in the American Journal. . . . 



How the ranks of Agricultural Chemists in this country 

 are enlarging. Goessmann at Amherst and Goodale in Maine 

 are valuable accessions. Yours sincerely, G. C. Caldwell. 



