1894.]  - James Logan. air 
this to the farina brought by the wind from a distant plant. 
In those ears from which I plucked off some of the styles, I 
found just so many ripe grains as I had left styles untouched. . 
In those covered with muslin, not one ripe grain was to be 
seen. The empty or barren eggs were nothing but mere dry 
husks. 
‘From these experiments, which I made with the utmost 
care and circumspection, as well as from those made by a 
great many other persons, it is very plain, that this farina 
emitted from the summits of the styles, is the true male seed, 
and absolutely necessary to render the uterus and grain 
fertile, a truth which however certain, yet was not known till 
the present age. The discoverer of this grand secret of nature 
ought ever to be remembered with due applause. Sir Thomas 
Millington, sometime Savilian professor, seems first to have 
taken notice of it, before or about the year 1676 [simply a 
conjecture without experimental proof] according to the ac- 
count which Dr. Grew gave in a lecture read before the Royal 
Society the 9th of November the same year (see Grew’'s 
orks p. 161, 171). Malpighi nowhere that I know of, 
mentions its use. And Grew himself, though he allows it 
necessary for fecundation, yet did not suspect that it entered 
the uterus: but S. Morland about twenty years after, asserted 
that it entered the uterus through the canal of the style (see 
Phil. Trans. No. 287). I once saw a small grain in the mid- 
dle of this canal; nor is it to be doubted, but that stricter in-- 
quiries will discover more of them passing the same way. 
n another paragraph, Logan seems to presage the discov- 
ery of the fact that nature abhors continuous self-fertilization 
by providing many adaptive floral arrangements. He says: 
“Not only in this plant, in nut bearing trees, reeds, in all the 
tribe of gourds, as pompions, melons, cucumbers, etc., In 
which the male and female parts of generation are separately 
Placed, but also in most of those flowers which from both 
Parts being placed within the same flower-cup, are by some 
called hermaphrodites, the apices are so situated that after 
the farina is perfected, they can seldom, if ever, touch the 
Summit of the style or os uteri. But in these, as well as in 
