152 THE GRANITES OF MAINE. 
ply local demands. Contract in 1905: The town bridge at Bingham, 
Me. 
The Emmons Taylor quarry is in the town of Norridgewock, on 
Dodlin Hill, about one-fourth mile north of Lawton quarry. Oper- 
ator, Emmons Taylor, Norridgewock. 
The granite (specimen 117, a) is a biotite-muscovite granite of 
light-gray color and very fine even-grained texture. The particles 
range from 0.11 to 1.1 mm., exceptionally 2.19 mm., and average 
about 0.50 mm. They consist, in descending order of abundance, of 
a slightly bluish milk-white potash feldspar (microcline and ortho- 
clase), clear quartz, soda-lime feldspar (oligoclase), black mica (bio- 
tite), and very little white mica (muscovite), together with accessory 
magnetite and apal ite. 
This is a very small opening, from which stone is obtained occa- 
sionally Cor monumental purposes. 
WALDO COT NTY. 
The quarries in Waldo County arc in the towns of Frankfort, Lin- 
coln. Searsport, and Swanville. 
The Mosquito Mountain quarry is in the town of Frank foil, on top 
of Mosquito Mountain, 2 miles S.,10° E. of Frankfort village. This 
mountain is a granite dome rising 545 feet above tide water, close 
by, with a steep east face shown in PL III, B. Operator, Hay ward 
Peirce, Frankfort, Me. 
The granite (specimen ^2, a) is a hornblende-biotite granite of 
general medium-gray shade and of porphyritic texture, with milk- 
white feldspar crystals from one-half inch to 1J inches in diameter 
in a gray matrix of medium texture, with black minerals up to one- 
tenth inch. It consists, in descending order of abundance, of milk- 
white potash feldspar (orthoclase and microcline), smoky quartz, 
a milk-white soda-lime feldspar (oligoclase), black hornblende, and.] 
black mica (biotite), together with accessory titanite, magnetite, 
apatite, and a little secondary chlorite, epidote, and carbonate (cal- 
cite or dolomite). The porphyritic feldspars are generally twins. 
Mr. E. C. Sullivan, of the United State- Geological Survey, finds 
that this granite contains 0.1 per cent of CO., (carbon dioxide) and 
that warm dilute acetic acid extracts o.()7 per cent of CaO (lime) 
and a trace of MgO (magnesia). Figuring the C0 2 to both CaO 
and MgO, this would give 0.13 per cent of CaC0 3 (lime carbonate) 
and 0.08 per cent of MgCO a (magnesium carbonate). The micro- 
scopic examination corroborates the occurrence of carbonate. 
A test of the compressive strength made of this granite in connec- 
tion with its use for the United States dry docks at Kittery, Me., 
reported to the writer by Mr. Hayward Peirce, the owner of the 
