* 
316 Scientific Intelligence. 
20. cay, NE of the Hanes of Mammals, with Analytical 
Tables; by Ta B GILL. 8vo, 98 pages, Smithsonian Mis- 
cellaneous Sates OS en 1872.—This work is still incom- 
plete. The part published contains, ist, a list of the families and 
higher groups of mammals, with some of their synonyms; 24, 
Bibliography of the works referred to; 3d, Synoptical Tables of 
sa Soa of the subdivisions of Mammals, with a catalogue of 
the Gen 
The Syuoptical’ Tables are completed only to the end of the 
Cete. This the work gives a very convenient epitome of 
the principal ioe of the | groups, and it is to be hoped that 
it will soon be completed. 
The classification will be indicated by the following table of the 
higher groups : 
Sub-class .—Placentalia or Monodelphia. 
Super-order 1.—Educabilia (= Megasthenes Dana). | 
ight orders: Primates; Fere; Ungulata; Toxo- 
dontia ; yracoides Proboscidia ; Sirenia ; 
order 2.—Inedueabilia (=Microsthenes Dana). 
Ae orders: Chiroptera; Insectivora; Glires ; Bruta. 
Sub-class I. = Didelohin 
rder arsupialia, “eee four sub-orders. 
Sub-class IL.—Ornithodelph 
rder Mo notremata, with two sub-orders. 
21. Fertilization in_Grasses.—Professor Lopes: of Frei- 
burg made to the Berlin hoadon a detailed communication on 
this subject, which is published in its ra ashy oe ais Oct., 1872. 
He shows that there is an entire series of ste om the completely 
diecious arrangement to that in which self- fertilization is the rule 
even if it has exceptions. There are, je instance, some examples 
of dicecious grasses, then a number of monecious Sere which fol- 
low some with both hermaphrodite | and a ate flowers, where 
grass urely hermaphrodite ego in some of which the 
pistil pheno before the anthers; in others, where the pistil and 
ant develop ee the discharge of pollen from the 
a 
pollen can reach the eal only with difficulty. And Goal some 
grasses in which close fertilization is not avoided, but actually 
urs in a large proportion of cases, and even pre mnderates; yet 
even in these instances occasional cross-fertilization does not appear 
to be excluded 
So that Be pant in grasses, as in other families of pee 
must be studied, apecies by species, and we saa apply ° 
genus. Thus the e genera ra Hordeum, bt and Thitiounn exhibit 
=e diversities in respect to fertilization in their several spect cles. 
A. G 
