LETTER OF TRANSMITTAL. 



United States Department of Agricui '"ure, 



Weather Bureatt, Office of Chief, 



Washington^ D. 6'., August /, 1905. 

 Hon. James Wilson, 



Secretary of Agnculture^ Washington,, D. C. 

 Sir: I have the honor to submit the manuscript of a first report, 

 by Prof. Cleveland Abbe, on the Relations Between Climates and 

 Crops, and to recommend its publication as a bulletin of the Weather 

 Bureau. 



This paper is not designed as an original investigation, but as a 

 summary of the views of the best experimentalists and observers, so 

 far as those had been published up to 1891. A continuation of this 

 study, bringing the subject up to date, is contemplated: but as the 

 ]Miblication of this first portion has been frequently requested, it 

 seems wise not to delay. 



The author has intended to notice onlj^ those investigations that 

 have given precise information as to specific plants or crops and spe- 

 cific localities, and has made a thorough search of all the more impor- 

 tant literature, in so far as it was accessible to him; it is believed 

 that the numerous extracts given by him will be gratefully received 

 by those who have not access to the same volumes. 



The work is prepared with the idea that it will be especially useful 

 to the teachers of the agricultural colleges and the investigators of 

 the agricultural experiment stations. Therefore only a limited edition 

 is recommended. 



As the memoir points out the importance of a climatic laboratory 

 and the methods that must be pursued in order to evolve new varieties 

 of crop plants adapted to special climatic conditions, I can but con- 

 sider that yon will recognize this memoir as a proper contribution to 

 igriculture from the Weather Bureau. 



Very respectfully, Willis L. Moore, 



Chief U. S. Weather Bureau. 

 Approved : 



James Wilson. 



Secretar'y. 



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