10 CORUNDUM, ITS OCCURRENCE AND DISTRIBUTION. 
on a tour through the Carolinas to Prof. B. Silliman, of Yale Uni- 
versity. In the collection there was a well-formed six-sided crystal 
of blue corundum, three-fourths of an inch long and an inch in 
diameter, with parting strise developed similar to those of the East 
Indian corundum. The crystal was sent without label, and, in reply 
to an inquiry as to its locality, Mr. Dickson wrote : '^ " I think it was 
Laurens district ; at all events, it was picked up by my own hands, if 
not in situ, in a place * * * which it could have reached only by 
one of the usual and natural accidents Avhich displace minerals of all 
kinds. * * * J .^j-j-^ g^^pg j|- jt^ American and Carolinian." 
In 1822 both Profs. Edward Hitchcock and Parker Cleaveland '' 
described a mass of cyanite found at Litchfield, Conn., " associated 
with talc, sulphuret of iron, and corundum * * * supposed to 
weigh 1,500 pounds." The corundum was massive and in six-sided 
prisms, of a dark grajdsh-blue color, and embedded in cyanite. Both 
of these authors attribute their information to Mr. John P. Brace. 
Mr. Samuel Robinson in 1825 mentions corundum in the list of 
minerals occurring in the vicinity of Franklin, N. J.^ 
In April, 1827, at a meeting of the Lyceum of Natural History, 
New York, " Major Delafield rf * * * exhibited crystals of sap- 
phire from Newton, Sussex County, N. el." In 1832 Doctor Fowler *^ 
described this locality, pointing out the geologic and mineralogic 
relations of the corundum. It is found along the border of crystalline 
limestone. 
According to Mr. W. W. Jeffries, as quoted by Mr. Joseph AYillcox, 
Messrs. John and Joel Bailey claim to have discovered corundum in 
the serpentine region of Chester County, Pa., about 1822 to 1825. 
Dr. Thomas Seal collected specimens at Union ville about 1832; Mr. 
Jeffries himself saw large lumps in the fields there in 1837 or 1838 ; f 
and a ton of surface fragments and bowlders was collected about 
1839 and shipped to Liverpool. But the search for the source of this 
material was unsuccessful till 1875, when a large lenticular mass was 
found in place. This consisted chiefly of corundum and margarite 
and carried some fine specimens of diaspore.'' 
In a report on the mineralogy of New York, in 1842, Mr. Lewis C. 
Beck mentions the occurrence of corundum in the white limestone 
near Amity, in Orange County. 
The discovery in North Carolina was of a large detached block of 
dark-blue laminated corundum, found on the French Broad River 3 
»Am. .Tour. Sci., 1st ser., vol. 3, 1821, pp. 4, 229, 230. 
*Am. Jour. Sci., 1st ser., vol. 6, 1823, p. 219; Cleaveland's Mineralogy and Geology, 
Boston, 1822. 
*= A Catalogue of American Minerals, with Their Localities, Boston, 1825, p. 165. 
<' Am. Jour. Sci., 1st ser., vol. 13, 1828, p. 380. 
«Am. Jour. Sci., 1st ser., vol. 21, 1832, pp. 319, 320. 
/ Second Geol. Surv. Pennsylvania, C, 1883, pp. 346-351. 
Second Geo). Surv. Pennsylvania, B, 1895, pp. 31-33. 
