50 
arrangement brings to mind the pairs of pollen masses derived . 
sintilarly from sdjaceit anthers in the closely allied family of the — 
Asclepiadacez. ; Fe : 
Just above the membrane or partition wall which divides the — 
upper from the lower portion of the style, the latter 1s surround g 
by tive small and very glutinous projections, which abut against 
that portion of the anther which we called a column and are pressed : 
a littls into the pockets, so that, in consequence of the depression — 
made by the column, they present somewhat the appearance of ten — 
little knobs. ‘They thus approach nearly the passage of the pollen 
on both sides of it, but do not block it up. ‘he upper part of the 
style is glutinous and imperfectly two-lobed : it would naturally be ; 
supposed to be the stigmatic surface. Pollen grains are commonly — 
found on it, whether in. course of nature or in consequence of dis- bs 
arrangement by dissection. ° The lower part of the style, below the 
dissepiment which screens it from the pollen, is top-shaped and — 
tapers down to the point where it joins the ovaries. The broadest 
portion is a little lower than the base of the anthers, where the 
space between them is widest, and would naturally afford a foot- 
hold for insects sipping the nectar. The filaments are parallel wi) — 
the tapering base. I have found grains of pollen also but in less 
abundance on this broadest portion of the style; where it mg 
have been left by an.in sect before drawing its foot or trunk up the a 
groove, as it certainly must do sometimes. 
I have found many cases of limbs of insects caught in the grooves — 
between the anthers, and, in one instance, the remaining UpP® — 
portion of a fly who had there “miserably perished,” having beat: 2 
held by his proboscis. On another occasion, I found the pollen 
mass of an Asclepias caught in the base of the groove. To _ 
tain if a small object drawn through the groove would bring ma 
the pollen, I availed myself of the hooked styles of a Geum. 
hooked end came out with a supply of pollen held together by® — 
glutinous substance, as if it had first brushed the glutinous et 
cesses that lie on each side of the entrance to the pollen, oe : 
next, coming in contact with the pollen, had brought it out. 4 fe 
days after I found the mass perfectly solidified. If the limb of sf 
insect were too large to more than brush the glutinous ey oar 
or if this substance had begua to harden, it would be difficult" 
the insect to escape unmutilated. oS oe : 
The plant is quite fertile, but, nevertheless, the larger portio® © 
the flowers fail to produce pods. oF e 
In the present paper I have endeavored to state the facts witho 
offering an explanation, though, in trying to make my descriptiom 
intelligible, I could hardly avoid suggesting one. I do not suppos? 
that I have discovered any new points in the structure of this ™ 
_ vellous flower, but I can not find that the mode of fertilization 
yet been interpreted, and propose to offer ‘some suggestions 0? 
subject in a concluding article. _ W. HL. 
M0. Aquilegia, Tourn—A scholar suggests that this word is ines 
