422 
On Sterility in the Cherry 
and in its vindication proves it to be a cannibal or insect-eater, and 
therefore conceived it probable that it fed on the real destroyer, which 
is a Chafer, MelnlontUa ruficoanis, a considerable number of which, 
were found to infest the corn fields, in company with the ZahruSy 
the latter of which, Mr. Stephens thinks, instead of being depreda¬ 
tors, actually prevented the Chafer from becoming more numerous, 
and consequently more destructive. Another interesting insect in this 
family is the Anchomenus prasinerywMichy like the Bombardier, com¬ 
bats its enemies with both smoke and noise. 
Family VI.— Bemhiididcc. —Contains 10 genera. The genus 
Bembidiuniy may be found in humid places, as the banks of rivers, 
and ponds. 
Family VII.— Elaphridoe. —Contains 3 genera. The Blethiza 
multipunctatay or Many-Spotted Blethiza, may be met with in mo¬ 
rasses. 
(T'o be Continued.') 
Article III .—On the Causes of Sterility in smyie species of 
Cherry. Communicated by Professor Rennie. 
M. Dutrochet, presented to the Academic des Sciences, of Pans, 
Reflections on the cause which occasions barrenness in certain species 
of Cherry. These species,” says M. Dutrochet, “are true hy¬ 
brids, which issue from the Common Cherry, {Prunus cerasus^ and 
the Black-heart Cherry, or Mazard, (Prunus Avium^ and in all hy¬ 
brids there is in general a tendency to sterility. This is not less true 
in the vegetable kingdom than in the animal kingdom, although the 
fact is not so generally known.” M. Dutrochet has been occupied in 
searching into the immediate causes of this sterility in Cherry trees, 
the fruit of which is subject to fall ofl“, and has discovered, that, for the 
most part, the flowers of these trees have stamina unprovided with 
pollen,—that their antherae form a compact and clammy mass, which 
does not pulverize into a fertilizing dust, as is the case in productive 
species.— Annales des Sciences Naturelles. 
J. R. 
