Botany. 507 
rocks, scorias, breccias, and lava flows, while in the central por- 
tion of the range massive igneous rocks are well exposed as 
stocks, breaking up through but slightly disturbed Cretaceous 
strata. The basalts are probably leucitic and closely resemble 
those of the Highwood mountains. The rocks described occur 
as dikes cutting metamorphosed Cretaceous beds, and are found 
in the central portion of the mountains. 
A further account of the geology and of the unusual rock 
types of this mountain group will be published jointly with Pro- 
fessor Pirsson at a future date. 
6. Crystallography: A Treatise on the Morphology of Crys- 
tals ; by N. Story-Masxketyne, M.A., F.R.S., Professor of Min- 
eralogy, Oxford. 521 pp., Oxford, 1895 (The Clarendon Press). 
—More than fifty years have passed since Professor W. H. Miller 
published his classical work on Crystallography, which he based 
In part upon methods already known, but at the same time devel- 
oped from them in a manner wholly his own, a system which has 
ever since borne his name. Early adopted by a limited school of 
Austrian crystallographers, it has gradually won for itself recog- 
nition, until now there are few workers who have not given proof 
of their conviction as to its supetiority by adopting it. During 
this time many important works on Miller’s System have been 
published both in German and French, but until now no notable 
contribution to it has been made in his own language. The 
present work of Professor Story-Maskelyne goes tar to recon- 
cile us for this long gap since in thoroughness and fullness of 
treatment it leaves nothing to be desired. ‘The public may con- 
gratulate itself that the gifted author has felt finally ready to 
give to it the manuscript that he has had so long in preparation. 
The volume is limited to the Morphology of Crystals, discussing 
in detail the relations between the planes of a system, the proper- 
ties of zones, the kinds of symmetry, the six crystalline systems 
and the methods of measurement and calculation of crystals. 
The whole is developed with admirable clearness and system, and 
will be studied carefully by all interested in this branch of 
science. The author promises a companion volume, dealing with 
the physical side of crystallography, and it is to be hoped that 
this may not be long delayed. 
III. Borany. 
1. Missouri Botanical Garden. Sixth Annual Report. St. 
Louis, 1895.—From the present report will be missed, but by no 
means as a real want, the full account of the proceedings at the 
two annual banquets instituted by Mr. Shaw, and the annual 
“Flower Sermon,” which has not been, as a rule, particularly 
edifying. The trustees have been wise in dropping these matters 
and bringing out into their deserved prominence the excellent 
botanical contributions by the Director and others. Professor 
Trelease gives an admirable monograph on the interesting mono- 
