Editoruil ('oiiiinciit. lCli> 
length, with 5 or (i distiuctly defined rounded nun u hit ions; dorsal 
furrows on each side of the axis, deep and well defined. The 
rside lobes are rather tumid in the middle, but concave towards 
ithe margin, the latter with a distinctly elevated angular rim and 
mearly vertically bevelled; there are 5 or (5 ribs extending about 
half way from the margin of the axis. In Aery small si)ecimens 
only 2 or !> are visible. 
LiH-alit;i. — Table Head and I'istolet bay : Tour miles N. K. rroin Port- 
land creek, NewfoimdIaTid. 
EDI^rORIAI. COMMENT. 
TlIK ll.I.INdlS S'I'AI'K .MrsKl'M. 
There is great activity in Illinois in numerous Ijranches of prac- 
tical geology and natural history. Not only is the Illinois Board 
■of Managers of the Columbian Exposition constructing a plaster 
of paris map, moulded to show the contours of the surface, but 
preparations are being made to make a complete display of the 
rocks and fossils of the state. Maps and sections showing the 
geological structure, based on a long series of studies of rock 
•outcrops and of deej) wells, will show the underlying geology, 
while soil and surface maps w^ill accompany the sections, calcu- 
lated to not only exhibit the distribution of the drift, but also 
the effect of the rocky substructure on the soils in the absence of 
the drift. A new contoured mai) lias been nearly completed, of 
the whole state, by Prof. C. \\ . Uolfe. of the State I'niversity, 
he having spent the wlole of hist season, with a lai'ge corps of 
assistants, in toi)ograpliical work. .Mr. biiidahl, assisted in one 
direction liy .Mi-, l-'rank beverett. and in another by Mr. E. (). 
Ulrich, has had the resi)onsilile ch-arge of the geological exhibit. 
He has fortunately gathered, during the last four years, a large 
addition to the available data for a practical study of the rocks 
■of the state, supi)lementing and extending the paleontological re- 
searches of Prof. Worthen l)v stratigraphic measurements and 
actual sections in the field. Never before this gathering of the 
.<lata of deep wells was it possible to construct profile sections 
