272 The American Geologist. April, 1895 
PERSONAL AN D SCIE NTIFIC NEWS. 
The Lake Supekior Mining Institute held its third annual 
meeting March 6th to 8th. The members met at Duluth on 
the moring of the 6th and were conveyed by a special train, 
which was at the disposal of the institute for three days, to 
the Mesabi iron range. The Mountain Iron and the Mesabi 
Mountain (Oliver) mines were examined. These two mines 
are worked by the "open pit" method and are the largest ship- 
pers on the range, each having produced over half a million 
tons of iron ore during 189-i. The Auburn mine, where the 
"milling" process is used, was also visited the same day. An 
evening meeting was held at Virginia. The next morning the 
party examined the Canton and Biwabik mines, and then went 
to the Vermilion iron range where the well known mines of 
the Minnesota Iron Co. at Soudan were inspected. In the 
evening an interesting meeting was held at Tower. The next 
day the mines at Ely, also on the Vermilion range, were exam- 
ined, and the party returned to Duluth that afternoon. 
The success of the excursion, in which about seventy per- 
sons participated, was due largely to the efforts of the secre- 
tary, Mr. F. W. Denton. Mr. H. V. Winchell prepared a guide 
book of the ranges, which was of great service to the excur- 
sionists. Among the papers presented at the evening meet- 
ings were the following: 
The relations of the vein at tlie Central mine, Keweenaw county, 
Mich., to the Kearsarge conglomerate. By Dr. L. L. Hubbakd, State 
Geologist of Michigan. 
The geology of the eastern end of the Mesabi iron range in Minnesota. 
By Dr. U. S. Grant. 
Open i)it mining with sjjecial reference to the Mesabi deposits. By 
Mr. F. W. Denton. 
A uniform method of samjiling and analysis of iron ores, l^y Mr. F. 
F. Sharpless. 
The distribution of ])liosi)hoi'us and the system of sampling at the 
Pewabic mine, Iron Mountain, Mich. By Mr. E. F. Brown. 
The LEciisEATUHE OF MICHIGAN is considering the advisabil- 
ity of entering upon a complete topographical survey of the 
state in cor»peration with the U. 8. Geological Survey. 
In Maine efforts are being made looking towards the estab- 
lishment of a gefdogical surve}'. 
Mastodon bones, representing at least three individuals, 
with a molar and vertebra of Equus fratermis Leidy, were 
found in June, 1894, in Hyde Park, near the Cincinnati city 
boundary, at a hight of 240 feet above the Ohio river (low 
water), or 670 feet above the sea. The bones were 5 to 13 
feet below the surface, in stratified clay, closely associated 
with till. Prof. Edward Orton considers the bone-bearing 
deposit postglacial. (Journal of Cin. Soc. Nat. Hist., vol. 
xvii, pp. 217-226, with a map and two plates, Jan., 1895.) 
