PART SECOND 
TWENTY-FOUR CHAPTERS ON HISTORICAL, BIO¬ 
GRAPHICAL, CRITICAL, AND PURELY ENTO¬ 
MOLOGICAL SUBJECTS CONNECTED WITH MY 
WORK 
PREFACE 
Since the publication (1901) of the Prospectus of my “ Record,” 
I have changed my original plan of intercalating “ Chapters ” on 
different subjects between the items of the “ List ” of my papers. 
It occurred to me that, as my “ Chapters ” contain a great deal 
of new historical, biographical, and critical matter of immediate 
interest, independent of the “ List,” it would be as well to publish 
them at once, and in a connected form. The number of “ Chapters ” 
has been now reduced to twenty-four. This will thus form the 
second part of my “ Record.” 
The third part, the “ List ” itself, being already prepared in 
manuscript, contains matter enough for publication, even if I 
should be no more present to superintend it. 
As my dipterological career has been intimately connected with 
that of Loew during the greater part of his lifetime, a consider¬ 
able proportion of the “ Chapters ” has been devoted to him. 
They are both biographical and critical, and their contents have 
been foreshadowed on pages 19 to 22 of my “ Introduction.” The 
concluding passage on p. 21 may be reproduced here, as summing 
up the scope of the “ Chapters ” concerning Loew : “ If I, as a 
younger entomological colleague of his, represent him now as I 
knew him as a dipterologist, with the defects of his character 
and the palpable limitations of his entomological talent , I mean 
tn render him a better service than I should by feeble attempts 
