256 Personal and Scienti^c News. 
course of publication and expected to be ready for delivery by 
the 1st of November. The book will be Royal Octavo about 
800 pp. in brevier type, with two columns on a page. About 
one hundred pages are devoted to definitions and laws of geol- 
ogy, stratigraphical geology and the laws of nomenclature. 
The great body of the work consists in a definition of all palae- 
ozoic genera with the etymology of the words, the name 
of the type species and place of publication, and the illustra- 
tion of nearly all the genera, with lists of the species which 
have been described. Some genera are illustrated by a single 
figure of the type species or a typical species, and others have 
several figures to show the generic characters. The work will 
be indispensable to every geologist, and the author believes it 
alike serviceable to the beginner whether at home or at school. 
It will be sold at $5.00 a copy. 
After the Late Meeting of the American Association 
for the Advancement of Science, at Toronto, an excursion to 
the area of the Huronian rocks in the vicinity of Sudbury was 
given by the Toronto Local Committee. This party was under 
the special guidance of Director A. R. C. Selwyn and Dr. Rob- 
ert Bell, of the geological survey of Canada, and embraced, 
besides several ladies and some botanists and entomologists, 
the following geologists ; Prof. G. C. Broadhead, Columbia ; Dr. 
E. W. Claypole, Akron; Prof. C. H. Hitchcock, Hanover; Dr. 
E. 0. Hovey, Waterbury ; Dr. A. C. Lawson, Ottawa ; Prof. E. 
W. Morley, Cleveland ; Dr. A. Winchell, Ann Arbor, and Prof. 
N. H. Winchell, Minneapolis. The party numbered twenty- 
three and returned to Toronto, Saturday, Sept. 7th, whence they 
dispersed again to their respective homes. 
This trip was remarkable not only for the marked interest 
that centers in the Huronian system of Canada, and the differ- 
ences that have arisen as to its nature and stratigraphic posi- 
tion, but quite as much for the contrast it presented to the ex- 
plorations made by the early geologists, Alexander Murray 
and Sir Wm. Logan, in the same region in the later thirties and 
early forties of this century. Those trips were arduous and 
dangerous, made in canoes or on foot, with a few Indians and 
laborers to carry along what food and instruments the work 
required. At night the party slept on the ground, sheltered 
only by a small tent or by a clump of bushes, or rolled up 
alone in their individual blankets. This trip was made in a 
parlor and sleeping car of the Canadian Pacific railway, in which 
the party found not only means for rest and sleep at night, and 
storage and transportation for instruments and specimens, but 
also the enlivening company and conversation of ladies. The 
car was drawn by a special steam engine, and was stopped 
wherever and as long as, the geological features of the region 
invited. 
