LOTER OF TRAXSMriTAL. 



U. S. Department of Agriculture. 

 Division of Vegetable Physiology and Pathology, 



^Vashingtm, D. C, Aj?ril 6, 1900. 

 Sir: I respectfulh' transmit herewith a paper on two diseases of 

 red cedar, giving the results of investigations by Dr. Herniaini von 

 Schrenk, of the Shaw School of Botany, St. Louis, Mo., and special 

 agent of this Division. The growing interest in forestry and forestry 

 problems has brought about a demand for more information on the 

 many diseases to which timber is subject. In order to obtain a better 

 understanding of the diseases Dr. von Schrenk was engaged the 1st 

 of July last to extend a series of investigations which had been inau- 

 gurated at the Shaw School of Botany. Through the kindness of Dr. 

 William Trelease, director of the school named, a plan of cooperation 

 has been effected, which it is believed will result in much benelit to 

 the Department. 



This paper is the first of a number on timber diseases that we hope 

 to issue, and I respectfully recommend that it be published as Bulletin 

 ,No. 21 of this Division. 



Respectfully, B. T. Galloway, 



Hon. James Wilson, 



Sea'etary of Agriculture. 



Chief of Dimsimi. 



