340  O. U. Shepard—Corundum Gems in India. 
Kulu; itis true oriental ruby, perfectly clear, and of a beautiful 
er. 
The facts I have collected regarding the first discovered 
deposit are derived from an examination I made of about an 
hundred weight of the crystals; their owner would not allow 
me to apply any tests, but I used a compound lens magnifying 
30 diameters. A. GRAHAME YOUNG. 
Kulu, Aug. 8, 1882.” : 
The discovery has the greater interest for us owing to certain 
analogies in the mode of occurrence and some otber particulars 
between the erystals found in India and those produced at 
several of the American localities. These resemblances are the 
most striking between the Indian specimens and those. 0 
Laurens district, South Carolina. At this latter place the crys- 
tals are enclosed in a highly micaceous schist as well as found 
loose in the contiguous soil; they are very abundant ; of the 
same size, surface and form as those described by Mr. Young; 
possess a similar coloration except with greatly inferior tints of 
blue and red; but are traversed by abundant cleavage flaws 
and destitute of transparency. : 
The Pelham, Massachusetts, corundum, which, however, 18 
by no means abundant, closely resembles that of Laurens, 
except that it is imbedded in a scaly biotite intermingled with 
vermiculite and ripidolite, with occasional inclosures of anor- 
thite seams. 
interior is distinctly stellated; and when the surface is polished 
‘a copper-colored chatoyement is sometimes presented. The 
colors of the Iredal crystals are less intense than those of 
Laurens or Pelham. 
The only analogy between the Indian crystals and the sap: 
phire and ruby of Macon and Clay counties, of North Carolina, 
consists in the association of ripidolite with both. 
_ The resemblances here pointed out appear to me sufficiently 
important to encourage the expectation that valuable corundum 
gems may yet be found in the United States. 
New Haven, July 19, 1883. 
