40 NEW YORK STATE MUSEUM 
occurs in seams interbanded with the county gneiss; also in dis- 
seminated particles through the mass of the rock. The seams, of 
which the heaviest is 4 or 5 feet thick, are rich in places, but the 
general run, as shown by the accumulation of material on the sur- 
face, is of considerably lower grade. There is little to be seen 
in outcrop, as in fact’exposures in that vicinity are quite limited. 
The county rock appears to be a laminated biotite-hornblende gneiss 
that has undergone injection by granite so as to exhibit as much 
of the latter as of the original mineral aggregate. The granite 
develops frequently a pegmatitic texture and is accompanied. by 
bands of white vein quartz. The ore seams, with the included 
rock containing disseminated magnetite, conform in strike and dip. 
The latter at the surface is about 45° northwest but is said to be- 
come nearly vertical at the bottom of the prospecting shaft, which 
had reached a depth of 165 feet in June 1913. The strike is north- 
east with the prevailing trend of the Highlands Precambric forma- 
tions. The company has erected a mill on the property for the 
purpose of concentrating the ore. The building is of sheet iron 
and is equipped with crushers, a dryer and magnetic separators. 
The latter are of the permanent magnet type, said to be a modified 
form of the Carter apparatus. The ore crushed down to 1.5 inch 
size, or less, falls in a thin stream in front of the horizontal mag- 
nets arranged one above another; the magnetite is diverted from 
the normal direction of fall by the attraction and passes into a 
separate receptacle, while the tailings continue their course down- 
ward from magnet to magnet without deflection. This method has 
the objection that the very fine particles of gangue are entangled 
more or less with the magnetite, as there is no jar or jigging move- 
ment to aid in their separation, which is secured by the common 
types of the drum and belt machines used in the Adirondack mills. 
To obviate this difficulty it is proposed to equip the last of the 
series of separators with an air-suction apparatus to draw off the 
dust from the falling stream of ore and tailings. 
MINERAL WATERS 
New York has held for a long time a leading position among the 
states in the utilization of mineral waters. The different springs, 
of which over two hundred have been listed as productive at one 
time or another, yield a great variety of waters in respect to the 
character and amount of their dissolved solids. There are some 
that contain relatively large amounts of mineral ingredients and 
