244  Serentific Intelligence. 
is a pinkish-colored cross-grained massive sandstone. It underlies 
the gray sandstone of the Dakota group and is briefly alluded to 
by Holmes.* On the Uncompahgre and on the San Miguel, near 
the mouth of Leopard Creek, the Jura-trias is overlaid by a 
failed sandstone of like color, having a band of bituminous 
limestone about 7 feet thick at the base. On the North Fork of 
the San Miguel the sandstone is generally gray and the limestone 
is from 20 to 40 feet thick. 
is group is slightly spells yw the Jura-trias, but, 
contrary to my statement in a prev communication on the 
subject,t it is conformable with the Crsteseans and more likely to 
be Lower Dakota than Jurassic. 
III. Borany and Zoonoey. 
1. Notes on Graminew; by Guorce erpere: F.R.S. Extract 
Jour. Linnean Society, vol. xix, p. 14-134.—A modest title to a 
most important essay, in which this ae eee sets forth the 
general sala abipe ent he has made of the genera of Grasses, to 
succinctly sketches, nor upon his view of the homology of the 
floral organs and their adjuncts, which has been discussed in a 
separate paper a few years ago, of which due notice was taken in 
this Journal. Botanists do eae need, and no others would be inter- 
ested in, an abstract of these v and conclusions. In his refer- 
ence to the morphology of the Tocrantek Mr. Bentham hesitates 
6 he His main objection to Hackel’s conclusion—that they 
e bractle _ dict fore and aft position; but as this is a com- 
mon position in the Monocotyledones, it seems rather to tell in 
The arrangement of the genera makes some new associations 
and representations which may horrify old- esteenege agrostolo- 
ists. In the two great divisions (which are those R. Bron? 
of pitoaiation: Ww tic is of minor importance in most other orders 
that any living botanist could make a better one. The reader will 
probably be surprised to learn that, predominant as Graminew are 
in individuals, they are surpassed by the Orchidew in the Pere 
of species. 
as Flora oe —The Graminew are continued by  Doell 
species chieslnced or cultivated in Brazil): ase, 84, a large ot 
contains the greater part of the monospermous Rubiacee y Mil 
* Hayden’s Report, 1875, page 266. + This Journal, vol, xix, 1889. 
: Ah 
ee 
ce I Cae ee TESS FN Pe ea RIE eae 
