398 Scientific Intelligence. 
“Thirdly, that self-fertilizers are every way as healthy and vig- 
orous, ore immensely more productive than those dependent on 
insec ta 
us Fourthly, that where plants are so ns see they are the 
worse fitted to engage in the struggle for life 
It is not easy to perceive how the last two very comprehensive 
propositions are or can be demonstrated. 
The next article, on Carnivorous Plants, by Professor aad of 
oa is pee and sketchy, recapitulating some facts well- 
known in the science, though novel to a popular sssonlg e; and 
dhiaity, petersing to Martynia and the vast number of small insects 
which are caught by its sticky glands, he suggests that “it is a true 
insectivorous “plant.” That may well be; ‘but the observations 
and experi 
emark: “ y dieses leaves have unequal lobes I cannot see ; and 
have no eo ay to offer as a probable explanation 
The Venation of a few odd Leaves, also by Professor Beal, 
vulgaris, by T. stock, is an abstract merely, describing 
the apparatus and apparent action of the bladders. “The va . 
0 
of this paper is sh bot except as confirmatory, in a measure 
the discoveries of others, and as an lastration of hie great ease 
of conducting similar observations, now m ed 
Lastly, Periodicity in Vegetation, by J ies Hyarr, of Dutchess 
Co., N. Y., is a longer article, noting how certain plants appear 
and oe ear in different years, in certain eae Silene antir- 
1874, “ while not 
at my side, who ‘ai passed four summers among these bee ra sat mal 
frequent visits to the a alpine regions, csc mete he has ie gt wherever 
of = ages apse aderascieete in the Rocky psstiierae gs and wir tf? the timber-line, 
flow ost variety, as in the imm dant s 
10, 000 to 1 12, 2,000 feet,” ete. Also that “insects are much more a noticed the 
a i “ frequen 
WwW. the mountains th: ns.” He has Jeak and barren 
an on the . . 
congregation of butterflies, in considerable numbers, about the b 
summits of rocky peaks far above the timber- line, whither pant: had probably i 
by the w Bees and other Hymenopte 
variety and abundance at the timber-line. ct 
m is among the vast fields of flowers which 
ie that ages as a sR inse s, as 
the abpiaie regions w with | the plains, I ar ” Aways 
very aa more abundant in the former than in the latte 
