232 ENTOMOLOGICAL SOCIETY 



It was Trimble's intention to have followed the first part of his 

 work with another upon the various caterpillars which injure fruit 

 trees and grape vines. For some unknown reason this second 

 part was never published, although the plates were prepared and 

 engraved. It has been my good fortune recently to obtain posses 

 sion of these unpublished plates through the courtesy of his daugh 

 ter, Mrs. Shaw ; and it is a great pleasure for me to have the op 

 portunity of presenting them for the inspection of the members of 

 this Society. 



The plates intended for the second volume are numbered, con 

 secutively, from 12 to 28, making a total of 17, all of which are 

 beautifully arranged and contain much of interest to the economic 

 entomologist, He departed somewhat from the plan he used in 

 his first publication, in that he has illustrated the principal natural 

 enemies of the insects he had under discussion. The predaceous 

 and parasitic insects, together with the principal insectivorous 

 birds, are all beautifully delineated and arranged on these plates. 

 They are all the more valuable from the fact that all the plates, 

 except four, contain an explanation in Trimble's handwriting, as 

 the original manuscript which should have accompanied them 

 seems to have been lost. I am also informed by Mrs. Shaw that 

 one lot of the stone plates from which the engravings were made 

 were used for filling up a cistern. One lot of these plates is still 

 in existence, and it is barely possible that they may prove to be 

 those of the unpublished plates presented here to-night. 



I also have in my possession a lot of unpublished drawings 

 which Trimble had executed during the sixties. These drawings 

 are of various insects and their work, all of which are of 

 economic importance. He seems to have contemplated the pub 

 lication of still a third volume, and it would appear from these 

 drawings that had such a publication appeared, it would probably 

 have been upon plant lice, and possibly the knot affecting plum 

 and cherry. I also find in this collection a proof-sheet from an 

 engraving of the asparagus beetle ( Crioceris asparagi} , which 

 is of considerable interest, as it seems to have been' one of the 

 very first drawn and engraved, showing this insect in all stages 

 of development, after its introduction into this country. I have 

 also nine unfinished drawings, bearing dates from 1862 to 1864, 

 upon plant lice and their work, the curculio, the oyster-shell 

 bark-louse, and several leaf-eating insects upon grape. 



If it is remembered that the work which Trimble did was 

 done as a pleasure and recreation, we are somewhat surprised 

 that he should have accomplished as much as he did in an almost 

 unknown field of original investigation. What he did was done 

 single-handed ; and that he spent a considerable sum of money 

 for artistic work and engraving cannot be doubted. 



In view of these facts, we must admit that Isaac P. Trimble 



