82s Till Ann rim II ( iinlinj tsf . Noveinbi-r, 18'J1 
aiitl refer to the euil oT the paper, whereas it woukl seem imich better 
and would afford easier reading, to have the usual foot references. The 
author says Protohihu is tlie connecting link between Procmiwhix and 
Pnfnot/ier/inii, this latter being also the forerunner of the llamas as well 
as the camels. He tliinks the two s|)ecies of I'liinninhiK, P. iKridi-ntith'x 
and /'. iiiii/iisfiili UK. the starting points of the llamas and camels re- 
spective!}'. Liiifiifrai/ttlox I'i the forerunner of the White Wivf^r J'lrhio- 
tlii riniii. The liridger IliniinriKhiii is connected with Puntnlrstix on theone 
hand and A<7>M/w/'//'/."< on the other. "'If these conclusious are correct, 
it follows that the Tvlopoda are but remotel}' conne(;ted with the true 
r\uninants." The points in which the modern camels agree with the 
ruminants and which are absent in the Piihrntheriinii have been inde- 
liiMidcntly acijuired. Tlie monograph doses with a bibliograpliy of 
tliirty-four contributions to this and allied subjects. Tlie tliree plates 
are magnificent expositions of the art. 
Till Taihn- si>iciiiii II iif KozoiHi. .1. W. (iuKoojtY, F. G. S. ((^uart. Jour. 
Geol. Soc. Aug. 1891.1 After a tliorough examination of this specimen 
of Koziioii from Tudor, Hastings Co.. Ontario, tlie author of this paper, 
supported by manj' authorities, comes to the already foregone conclusion 
that it is not of organic origin. It is further stated that the rock containing 
tiie specimen is not, as has been previously described, Lower T^aurentian 
but "Huronian'* of Selwvn and Vennor. 
Sf,)iie.ifor Jinihliiig uiiil Jtirnnitioii, by Geouoe P. Mkkkii.t., Curator 
■of Geology in the United States National Museum, Octavo, pp. 4."v». 
New York. .John Wiley «.V: Sons, 1801. All quarrymeu and builders 
wiio use stone will welcome tliis volume. It is the first of its kind in 
America, and it Avill ccrtainlj' serve a very useful purpose in the (luarry- 
ing industry. Quarrymen and stone users are very apt to be ignorant 
■of the mineralogy and geology of the rocks they handle, and the crudest 
notions concerning them are frequently current. In this volume the 
composition and other natural (|ualities of all the building-stones of the 
<"ountry are set out plainly in simple and nontechnical, yet in accurate, 
ilescriptive. language. This will afford the information that is so badly 
needed by tlie ordinary builder, and will disseminate otlierwise a more 
tliorough and scientitic knowledge of stone. Of course the scientitic man 
does not look into such a work for anything new in science. It is not 
addressed to such, but it contains many generalizations and summary 
statements in convenient form which will make it also very useful to 
liim in reference to those jiortious of the subject with which he may 
not be jieESonally familiar. It is a compendious dictionary of the i)ro 
diiction and distribution of stone for construction and decoration in the 
I'nited Stiites, and also contains chapters on the weatlieriiig and jireser 
vatioii of buihling-stones. and on their comparative <|ualities. No one 
lias had ampler facilities, and certainly no one could be better fitted for 
ihe production of such a work than the curator of geology of the 
L'uited States National ^lusenm, where samples of all the Imilding- 
