1888. | NEW YORK ACADEMY OF SCIENCES. 251 
carats (828 milligrams), 3 of an inch long and ¢ of an inch wide, 
and measuring 9X10X7 mm. It is slightly yellow, has one 
small black inclusion, and would afford a stone of from 1} to 2 
carats’ weight. The specific gravity I found to be 3.527. The 
surface of the stone is curiously marked with long shallow pit- 
tings. 
Mr. L. O. Stevens, of Atlanta, Ga., has communicated to me 
that a colored man called on him during the past year with 
a two-carat diamond, defective and of very poor color, which he 
had found in his garden within a few miles of Atlanta. The 
finder, Mr. Stevens says, has shown no desire to sell or loan the 
stone. 
In behalf of the Committee appointed at a former meeting, 
Pror. D. S. MARTIN read a memorial notice’ of 
Av. Aoseph B. Holder, 
Dr. Joseph Barrett Holder was born in Lynn, Mass., October 
26th, 1824. He was descended, on his mother’s side, from the 
Barretts, a well-known English family during the time of 
Henry VIII., while the Holders were among the early 
Friends or Quakers in this country. 
Dr. Holder’s immediate ancestor in America was Christopher 
Holder, who came over, in the ship Woodhouse, in 1657. As a 
Quaker, he came to this country to escape religious persecution. 
Landing in New York, he went to Boston, where he was thrown 
into jail for avowing himself a Quaker or Friend. The dif- 
ferent branches of the family settled in and about Boston; and 
Dr. Holder’s great-great-grandfather built a house in I-ynn in 
1700, at the corner of Nahant and Sagamore streets. It 1s still 
in use, though moved in 1855. Here Richard Holder, grand- 
father of Dr. Holder, was born in 1757, and his father, Aaron 
Holder, in 1797. The latter carried on until his death the drug 
business; the house of Holder & Co. is still flourishing in 
Lynn. 
The subject of this notice was educated at the Harvard Medi- 
1 In place of the notice read, the following more extended sketch is 
here inserted. 
