TREE RECORDS: GEOGRAPHICAL DISTRIBUTION 93 



These have been dated, but not yet measured. Considerable 

 parts of all except one can be used, but there is a tendency to show 

 very small compressed growth in the early years. No. 8, the excep- 

 tion, goes back to the neighborhood of 1700, but is too uncertain to 

 use. No. 19 extends to about 1743, but can only be used after 1890. 

 No. 10, beginning about 1792, can probably be measured. A fair 

 record from 1800 will come from the Great Bear Lake region. The 

 South River group extends to about 1835 and the North River group 

 to 1860, with a single one to 1808. This valuable collection will be 

 of the greatest help when the cycles over larger areas are studied. 



East Wareham, Massachusetts (EW) — This group consists of 

 some 21 v-cuts and increment-cores secured largely in 1921, from the 

 region between Wareham and Sagamore Beach. The cross-identifica- 

 tion is good in most of them, but injuries have affected a number and 

 many are too short and only 8 are held as worth measuring. These 

 will carry a good record to 1840 and a single one to about 1795. This 

 last is from the "lone pine" which used to stand in the lane about 

 half a mile southeast of the Onset Junction railroad station. 



Mount Washington group — Two sections of very old black spruce 

 trees from near timberline on Mount Washington have been kindly 

 sent by Professor W. C. O'Kane, of the University of New Hampshire. 

 These grew at about 4,000 feet elevation, were badly deformed, and 

 were some 3 or 4 inches in diameter and about 275 years old. This is 

 the nucleus of a valuable group. 



Mount Desert, Maine — Three increment-cores were sent me in 1921. 



NW. Pennsylvania group (PA) — This group of 10 v-cuts and 1 

 increment-core, 10 white pines and 1 beech, was collected May 20, 

 1922, from the logging camps of the Wheeler Lumber Company, by 

 kindness of the manager, Mr. N. P. Wheeler, jr., in the higher parts 

 of the mountains halfway between Pittsburgh, Pennsylvania, and 

 Buffalo, New York. These cross-identify well and give a record 

 extending back to about 1650. The beech shows favorable ring 

 variation and gives promise of being a useful tree in such studies as 

 t nPSP 



FOREIGN GROUPS 



Brazil (BZ) — Two 6-foot sections of the South American pine 

 from southern Brazil were measured by the auto-plot method in the 

 Commercial Museum in Philadelphia. They had been cut about 1902 

 and were each close to 500 years old. They did not cross-identify, 

 though the rings seemed clear and practically without error. 



Tasmania (TS) — A section of King William's pine (Athrataxis 

 selaginoides Don) from 3,000 feet elevation in the highlands of Tas- 

 mania, has been sent me by Mr. G. Weindorfer. It gives great promise 

 of valuable cycle studies in the southern hemisphere. 



