254 G. Bentham’s Anniversary Address. 
of the most eminent botanists,” due allowance being made for 
the time. While criticizing Trécul, we are not clear that Mr. 
Bentham has sufficiently considered the writings of Van Tieghem, 
who claims, perhaps too confidently, that he can draw a osi- 
tive line of distinction between an axial development and a true 
appendage. 
“ Hermann Mueller’s ‘ Befruchtung der Blumen durch Insecten’ 
proves to be just such a repertory and digest of recorded facts 
ported by original observations as is become absolutely 
ispensable for the further pursuit of inquiry in this 
direction. The author is brother to Fritz Mueller, of Desterro 
in South Brazil, so well known as a judicious and reliable 
su 
in 
here first brought prominently into notice appear to be, the 
variety of insects which visit the same flowers, the variety of 
flowers visited by the same insects, and the number of flowers 
which an insect, deceived by false appearances, visits in seare 
of what is not to be found,—all much greater than had hitherto 
been supposed, 
Besides the methodical record of all the facts he has been 
able to collect from German, Italian, Swedish, and British lit- 
erature, H. Mueller commences with a short historical intro- 
duction, in which he does full justice to his predecessors, and 
concludes with some general considerations of a remarka se 
sober character. He justly criticizes the fanciful flights of 
Delpino’s imagination, to which I have myself alluded in 
former addresses, and Axell’s theory that the development of 
the fertilizing arrangements in Phanerogams has been always 
an advance, and still continues to advance, in one and the same 
direction toward perfection; and, as far as I can see, his own 
conclusions are none but what are fairly deducible from the 
facts he records. 
“With this book in hand, I cannot but strongly recommend 
the further pursuit of an inquiry, still in a very early stage, t0 
supposed facts are confirmed by direct observation, and how 
far they may mutually have influenced each other.” 
