120 THE GRANITES OF MATNE. 
Pa. Specimen monuments and statues: Statuary on Plymouth monu- 
ment, Massachusets ; National monument at Yorktown, Va. ; New 
York State monument at Gettysburg, Pa.; Soldiers' monument at 
New Haven, Conn.; Richard M. Hunt monument in Central Park, 
New York; Battlefield monument at Trenton, N. J. Contracts in 
1905: Suffolk Savings' Bank building, Boston; several mausoleums 
for New Orleans. Pittsburg, and Chicago; ex-Governor Cleaves's 
monument at Portland, Me. 
The Tayntor quarry (formerly known as the Melvin quarry) is in 
the town of Hallowell, '2 miles north-northwest of the city of Hallo- 
well. Operator, C. E. Tayntor £ Co.; office, Hallowell (C. E. 
Tayntor, 239 Broadway, New York). 
The granite is a biotite-muscovite granite of light-gray shade and 
fine (but porphyritic) texture, identical with thai of the Longfellow 
and Stinchiield quarries (specimen 111. a) described on page 117. 
The genera] diameter of panicles, excluding the porphyritic crystals, 
range- from 0.25 to L.25 mm. One of the small porphyritic oligoclase 
crystals measuring 2.25 mm. in diameter shows calcite between its 
cleavage planes. Calcite appears also independently in plates up to 
0.5 mm. aero--. Mr. E. C. Sullivan, of the United States Geological 
Survey, tested granite from the Tayntor quarry and found that it 
contained 0.146 per cenl of C0 2 (carbon dioxide) and that warm 
dilute acetic acid extracted 0.24 per cent of CaO (lime) and no mag- 
nesia. The C0 2 found corresponds to 0.33 per cent of CaC0 3 (lime 
carbonate). The difference in the result of the tesl of this and the 
test of the Stinchfield quarry -tone may not hold good of the stones 
in general. The average of both tests or 0.235 per cent for i\w lime 
carbonate of both -tone- may be nearer the truth. 
The quarry, opened before L840, measures 520 feet N. 30° W. to 
S. 20 E., by : ; T:» feet across and from 10 to 10 feet in depth. The 
deeper part of it is 275 by L50 and lo feet deep. It is drained hy 
pumping after rain. In places the glaciated granite surface is cov- 
ered with 5 feet of sand and bowlders. 
Rock structure: In places there is a vertical How structure with 
course N. 35° \Y.. and where it occurs it is the direction of easiest 
fracture. The sheets measure from 1 foot to 6 feet 6 inches (the 
thicker being the lower ones), and are horizontal. The joint and 
dike courses are shown in fig. 21. A recurs at intervals of 20 to 20| 
feet, and forms one heading, which does not extend beyond a depth 
of 15 feet from the rock surface. B sometimes dips steep north, 
recurs at intervals of 10 to 40 feet and forms headings in the northern 
half of quarry. The rift is horizontal and grain vertical, N. 70° AV., 
but feeble. Fig. 21 shows the courses of the pegmatite dikes, a dips 
45° N. and i> 4 inches thick, b dips 65° E. and is :>> inches thick, 
c dips X. and is 3 inches thick. Pegmatite lenses 2 feet thick also 
