Hevt'eto of Tlecent Geolo(ilcn1 Litem fnre. 197 
Figure 27. Liiiu(lKS2)ol!jj)Ji(>iiins; niter Kingsley. Xq)Jiot<ii)-(i. Ven- 
tral view of embrj'o ; shovviug the budding of the legs. 
Figure 28. Limulus iwlyphemus: after Packard (from Balfour). 
Xvplwiura. Ventral view of embryo in the egg ; showing the rudiments 
of six pairs of legs : ni. mouth. 
Figure 29. Limulus polyphemua: after Packard (from Balfour). 
XipJiosura. Oblique side view of embryo, with the mouth and rudimen- 
tary limbs on the ventral plate. 
The figures of embryonic Limiiliis are introduced for comparison. 
They are so different from the nauplius that detailed notice seems un- 
necessary. 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
Geological Surrey of Canada, Annual Report (new series), I'ol. vi,/o?' 
1892-93. Alfred R. C. Selwyn, Director. (Ottawa, 1895. Price 50 
cents.) This volume includes the summary reports of the operations of 
the Survey during 1892 (95 pages) and 1893 (98 pages); a preliminary re- 
port on the geology of a portion of central Ontario, in the counties of 
Victoria, Peterborough, and Hastings, Vjy Frank D. Adams, 15 pages; 
a preliminary report on geological investigations in southwestern Nova 
Scotia, by L. W. Bailey, 21 pages with map : chemical contributions to 
the geology of Canada, from the laboratory of the Survey, by G. Chris- 
tian Hoffmann, 9.3 pages : and the annual report of mineral statistics 
and mines for 1892, by E. D. Ingall and H. P. H. Brumell, 212 pages, 
with 12 plates showing graphically the production of asbestus, coal, cop- 
per, iron, petroleum, phosphate (apatite), gold, silver, and salt (import- 
ed), during 1892 and preceding years. The parts of the volume as here 
noted are separately paged, with the addition of a letter to designate 
each part, so that they are indexed together. 
Several other important manuscript reports, with numerous maps, re- 
sulting from the work of the Survey during the years here covered, are 
stated to be ready for the printer and engraver, but are unfortunately 
delayed in publication on account of inadequacy of the appropriation 
for this use. It is hoped that these will soon l)e issued in a succeeding 
volume. 
The deep well at Deloraine in Manitoba, northwest of Turtle mount 
ain, has been completed vuider the direction of the Geological Survey, 
boring to a total dejjth of 1,953 feet. The section consisted chiefly of 
the Ft. Pierre, Niobrara, and Ft. Benton shales, beneath which the top 
of the Dakota sandstone was reached at 1,822 feet from the surface, or 
about 178 feet below sea level. From the sandstone at 1,855 feet a fee- 
ble artesian flow of somewhat saline water was obtained, which, how- 
ever, was shut off by the lowering of the casing as the boring was con- 
tinued in the hope of securing a more co])ious supply. Becau.se of the 
imperfect jiermeability of the sandstone, its lower sujiply of water rose 
