Brief Notices. | 431 
are preserved in the Museum at Whitby. The Editor expects to 
deal with 150 or more species, and to complete his work in about 
sixteen parts, each containing from twelve to sixteen plates. The 
original descriptions of the fossils are reprinted, together with figures 
of the types admirably reproduced from’ photographs, mainly by 
Mr. J. W. Tutcher. 
Of special importance is the illustration of the Simpson Collection. 
The specimens, as the editor remarks, had received ‘‘ careful and 
discriminative studies”’, but without figures ‘‘it is almost impossible 
to obtain due knowledge of Lias Ammonites, and certainly dangerous 
to describe or name species as new”’. In identifying and figuring 
Simpson’s species he has rendered a distinct service to paleontology. 
Simpson, although ready to add, where necessary, to the number of 
species, was averse to the multiplication of genera, and in this he will 
have the cordial sympathy of most geologists. 
The editor gives definitions of biological, biogenetic, and other 
technical terms, also some notes on Ammonite development and on 
generic names. It is a defect that all the new names have not the 
suffix ceras, surely a convenience even for the paleo-biologist, who, 
as a rule, can alone find use for them; but the editor is by no means 
entirely responsible for this. He gives the latest of the generic 
Ammonite names, and a list of comparable species with references. 
This list is admittedly incomplete, but it might well have included 
all the names adopted by J. F. Blake. 
Among the forms figured are Ammonites mulgravius, A. exaratus, 
A. levisom, A. lythensis, and A. lenticularis; also one Nautilus, 
NV. subcarinatus. ‘To the ordinary geologist a Nautilus, however, 
is not an Ammonite. We trust that the editor will be well supported 
in his undertaking. 
V.—Brirr Notices. 
1. Yorxsuire Fossirs.—Messrs. H.C. Drake & Thos. Sheppard have 
published in the Proceedings of the Yorkshire Geological Society, 
vol. xvii (1), 1909, a ‘‘ Classified List of Organic Remains from the 
Rocks of the Kast Riding of Yorkshire”, post-Glacial to Lias. This 
laborious piece of work aims at ‘‘ placing in a convenient and compact 
form all the various and scattered records that have been published ”’. 
No attempt has been made to revise the nomenclature, as it was felt 
that the older names would be more familiar to searchers. It is now 
easy to ascertain whether a given species has been previously recorded, 
and the reference to the authority and the place of publication have 
been indicated. 
2. Department oF Minzs, Canapa.—The Summary Report of the 
Geological Survey Branch of the Department of Mines, Canada, for 
1909, issued 1910, contains .much useful information on various 
subjects and localities. In his Report the Director, Mr. R. W. Brock, 
remarks that although the work undertaken by the Survey has been 
along strictly economic lines, the geologists are not engaged in 
prospecting. Thus ‘‘The Government geologist may recognize and 
direct attention to mineralized districts that afford promising ground - 
