30 



looking at the place affected the farmer can see the iusect iu all its stages, aud, at 

 the same time, by referring to the Patent Office Agricultural Eeports, can tind out 

 the remedies iu general use. 



That Mr. Glover contemplated such a work before he came to Wash- 

 iugtou is evident from a number of plates on stone still in existence, 

 made early in the decade from 1850 to 18C0. He has more than once 

 alluded to it iu conversations with me, aud but for the counter interest 

 iu pomology, and in the preparation of his models of fruit, he would 

 have attempted it at that time. I take pleasure in reproducing- here a 

 jilate made by him in February, 1852, which contains some ten species 

 of insects, all of which are tolerably well drawn. (Fig. 5.) His work at 



J. % '^ 



Fig. 



that period bad attracted the atteution of Dr. Harris, aud some ten 

 months after this plate was made he was in receipt of a letter from the 

 doctor acknowledging his superior skill iu the delineation of iusect 

 forms, and asking his co-operatiou in the preparation of a new work on 

 entomology. I give herewith the main portion of Dr. Harris's letter, 

 only omitting a page or more of explanation of figures in the plates 

 Mr. Glover had sgnt him. It is as follows : 



Cambridge, Mass., December 15, 1852. 

 Dear Sir: Your letter of the 7th instant with the specimens of yonr engraving aud 

 the drawing of the pear-tree insects, reached me this day, and I am very much grati- 

 fied by these tokens of your remembrance. 



