Reports ancl Proccedings. 
329 
his System being most easily understood by beginners, and most 
convenient for giving a general knowledge of tke principles of the 
Science. 
For use in calculations it is, however, mucb less satisfactory tban 
the method of Miller, and a concise exposition of Miller’s system 
has therefore been added in Appendix “ A.” 
The chapter on the physical characters of minerals has beeil 
expanded to a considerable length, especially as regards their optical 
properties, but not more so than was absolutely necessary in order 
to make clearly intelligible the practical application of the principles 
of optics to the study of crystals. 
The descriptive part, which, as al ready stated, has been made 
subordinate to that of physical mineralogy, is identioal in general 
arrangement with that of Dana’s “ System of Mineralogy,” to which 
reference must still be made for fuller descriptions of many un- 
certain species and varieties with descriptions of localities and 
methods of occurrence. 
A large part of the figures are reproduced from Dana’s System of 
Mineralogy ; but 200 are new to ttiis work, and greatly enhance its 
intei'est and usefulness to the student. 
The Chemical feminine given in the 5th edition of the System of 
Mineralogy are only in part those of modern chemistry, but those 
of the present work are uniformly in modern notation. 
Tn addition to Appendix “ A,” treatingof Miller’s Crystallography, 
we have in Appendix “ B ” a most important chapter on the draw- 
ing of figures of crystals, and “ C,” a series of Tables to be used 
in the determination of minerals, whilst “D” is a Catalogue of 
American localities of minerals essentially the same as that con- 
tained in the last edition of the “ System,” but with considerable 
additions derived from various printed sources and from private 
Communications. 
The book is one which reflects great credit on its authors, and 
cannot fail to prove a most acceptable addition to our series of 
higher text-books, for which no doubt there will be as great a 
demand as for the several editions of Dana’s System of Mineralogy. 
T. D. 
BEPOETS -A-HEED IPEiOCIEIELDIICTGrS. 
Geological Society of London. — I. — May 23, 1877. — Professor 
P. Martin Duncan, M.B., F.R.S., President, in the Chair. 
The President read a letter from C. J. Lambert, Esq., announcing 
that his father, the late C. Lambert, Esq., F.G.S., had left by will 
the sum of £25,000 to be distributed in gratuities to persons in his 
employ, and in gifts to scientific societies. The distribution of this 
amount was left to the judgment of Mr. C. J. Lambert, who allotted 
the sum of £500 to the Geological Society. The President further 
announced that the sum of £500 had already been paid to the 
Society, and would be invested for its benefit. 
The President also announced that a letter had been received from 
