318 Serentific Intelligence. 
1886 is promised early in 1887; the value of the series increases 
with each additional volume because of the opportunity thus 
offered for study and comparison together of the facts presented 
in the succeeding years. 
&. Geological “Collections: Mineralogy; by W. O. Crossy, As- 
sistant. 184 pp. Boston, 1886.—This is a well prepared onide 
to the mineralogical collection of the Boston Society of Natural 
History ; the ceneral chapters forming the introduction give it 
something more than a local interest and value. 
III. Botany Aanp ZooLoGy. 
Borantcan Nores.—“Hntomophilous Flowers in Arctic regions. 
In the Botanisk Tidsskrift, (with its French title of Journal de 
Botanique), published by the Botanical Society of Copenhagen 
(which Journal is now in its sixteenth volume), Professor Warm- 
ing has published a series of articles mainly concerning the adap- 
tations of entomophilous flowers in an arctic district of scanty 
insect life. His interesting biological notes are illustrated by 
figures interspersed in the letter press, and the whole is happily 
made available to us by a French résumé of the Danish text, a 
most commendable feature. These papers comprise the results of 
Dr. Warming’s observations in Greenland in the summer of 1884 
and a comparative series in Arctic Norway in 1885. Greenland 
is very poor in insects, especially of insects which perform an 
important part in the fertilization of the entomophilous blossoms 
of northern regions generally. Dr. Warming undertook a care- 
ful comparative study of these northern flowers, to learn whether 
those in Greenland were identical in floral biology with the same 
species in Europe. In many no differences were found, but in 
not a few certain modifications were detected in the Greenland 
flowers which rendered them more adapted to self-fertilization 
than those of the same species on the European continent, where 
the appropriate visiting insects are more abundant. In answer 
to the:question whether the attractiveness of these blossoms for 
insects remained unaltered in Greenland, Dr. Warming is able to 
state that with three or four exceptions, the nectar-secretions 
seemed not to be diminished; but that the odors were feebler, 
the size of corolla less, and the colors not so vivid as in the same 
species on the continent. As the entomophilous flowers of Green- 
land manifest an increased adaptation to self-fertilization, it might 
have been expected that the dicecious or polygamous tendency of 
some of them would disappear, but it proved not to be so. But 
the Salices were found to be remarkably fruitful, and it seems 
that they had become anemophilous. 
Fascicles 98 and 99 of the Flora Brasiliensis have appeared. 
In the former Dr. Schumann gives the Brazilian Z%iliacece and 
Bombacece. In the other Professor Cogniaux continues the elab- 
oration of the large order Melastomacece. 
In vol. vi, part 3, of Hooker’s Icones Plantarum, issued in Feb- 
ruary, one North American species is figured, Cotyledon viscida, 
