48 Eevieir of Recent Geological Literature. 
batteries, and allow the water to flow back to the main sumpt 
of the mine, where it is pumped out to be again used in carry- 
ing more culm to its original abiding place. Filling with 
culm alone would not answer the purpose; it would form a 
cone of loose dirt and of no strength; but if deposited as above 
described it becomes a nearly solid mass, an abundant support 
to the surface or strata above the vein. The material is cheap, 
abundant and conveinent. We can now realize, after a year's 
trial, that we secure three-fourth of all our coal where this 
method has been adopted. I hope our further experience will 
yield even better results." 
REVIEW OE RECENT GEOLOGICAL LITERATURE. 
Synopsis of Eosenbusch's New Scheme for tlie Classification of Massive 
Hocks. By W. S. Bayley. This is a separate issue of 24 pages of Prof. 
Baylej'-'s three contributions on the subject to the American Naturalist. 
This condensed view of Rosenbusch's classification is timely, and Prof. 
Bayley's pamphlet, if accessible, will be a great convenience to the in- 
creasing number of petrographic investigators who may not as yet have 
provided themselves with the second edition of the original work. 
Proceedings and Transactions of the Nova Scotian Institute of Natural 
Science, of Halifax, Nova Scotia. Vol. vii, Part ii, 1887-88. This part con- 
tains three important geological papers by Rev. D. Honeyman, D. C. L., on 
*'Glacial Geology of Nova Scotia;" "Carboniferous Flora with attached 
Spirorbes," and "Nova Scotian Superficial Geology, Systematized and 
Illustrated." Mr. Honeyman concludes that the facts as observed by him 
conflict equally with Sir J. W. Dawson's theory of absence of glacier 
agency, and Thomas Belt's opinion that the Nova Scotian Drift is a "local 
phenomenon." The same Part cont lins a third paper on "The Carbon- 
iferous of Cape Breton, with Introductory Remarks," by E. Gilpin, Jr., 
F. G. S., F. R. S. C. 
Peter Redpath Museum, McOill University, Montreal. Specimens of Eo- 
zoon Canadense and their Geological and other Belations. Montreal, Sep- 
tember, 1888. By Sir J. William Dawson, L. L. D., F. R. S., F. G. S., &c. 
This memoir, of 107 pages, is the result of an attempt to catalogue and 
describe the original specimens on which the name Eozoon was based, 
together with those later acquisitions which have thrown further light on 
its structure. The collections made by Sir "W. E. Logan are now for the 
greater part in the Museum of the Geological Survey at Ottawa. Those 
accumulated by the author of these notes, as well as duplicates presented 
by Sir W. E. Logan, are in the Peter Redpath Museum. Large and valu- 
able collections, more especially of microscopic preparations, were also in 
the possession of Dr. W. B. Carpenter at the time of his death. 
