40 



these little pocket reference books, a uuinber of which he gave me, aud 

 which are valued souvenirs. 



Wheu recently examinino- the manuscript left by Mr. Glover, now in 

 the I^ational Museum, 1 found with* his text of the Diptera the preced- 

 ing volume of notes also, from which it had been copied, illustrating 

 perfectly his method, as described above. In this volume, as with 

 others, wheu the blank pages had been covered, slips of paper of vari- 

 ous shapes and sizes were pasted in ; the accumulation of these slips 

 and the inserted pages making it in time difficult to find any thing 

 readily, aud then the new blank book was necessitated. With each re- 

 copying he made changes, revising, adding new facts, and giving fuller 

 accounts of particular insects, so that tbe new volnme of notes in a 

 short time grew to twice the size of the one that preceded it. As an- 

 other example, the manuscript of his " list of animal and vegetable sub- 

 stances injured," accompanying the Lepidoptera, in all something less 

 than 100 pages, he copied in seventeen days, in the winter of 1870, the 

 dates of commencement and completion being recorded on one of the 

 ^y leaves of the volume. 



The fact that the text of his work was brought together in this man- 

 ner will account in a measure for its apparent incongruity in the differ- 

 ent ])arts, considered in the light of an entomological work, which the 

 plates were supi)osed to illustrate. In reality the plates were the 

 " work," and the text or subject-matter a secondary consideration. 

 That it has been gradually evolved from a very early beginning is 

 shown, too, by its many references to Westwood, to the old German 

 work by Leunis, and other of ttie earlier authorities whose publications 

 in modern times have been entirely superceded by the many recent 

 works that have kept pace with the progress of entomological science 

 in the United States. As these extracts and references referred chiefly 

 to general habits of groups and families and to classification, the neces- 

 sity for a later revision was not fully ai)preciated. Mr. Glover always 

 had a very high appreciation of Westwood,* regarding the work some- 

 thing in the light of an entomological bible, and to that extent always 

 a safe rule and guide for the seeker after truth. In minor portions, 

 therefore, his text was not fully adapted to the American student; and 

 his material from Leunis less so. In his treatment of species, however, 

 he aimed to give in very condensed form the Icnown facts, from whatever 

 reliable source they were obtainable. That the work remains in an un- 

 finished condition is due to the sudden failing of his health. 



But the scheme of the work as contemplated by its originator was a 

 grand one. No more complete reference book of entomology was ever 

 conceived or more practically carried out as far as he had been able to 

 carry out the design. This, in substance, is the scheme of arrangement 

 as far as relating to species. 



*Introduction to the Modern Classilicatiou ot Insects, 2 vols., 1639. 



