108 TIMBER AND TIMBER TREES.  [cuap. 
THE BALTIMORE OAK TREE (Quercus), 
so called from the shipments being made chiefly from 
Baltimore, is a perfectly straight timber, and is brought 
to us in lengths varying from 25 to 40 feet, the squares, 
or sidings, being from 11 to 20 inches. 
The wood is of a reddish-brown colour, somewhat 
darker than the White Oak, and less hard and horny in 
texture; it is moderately strong, and the quality fair. 
It might be used with advantage for many minor fit- 
ments in ships, and for general purposes in carpentry, as 
it is easy to work, and stands well after seasoning. It is 
not, however, recommended for use where great strength 
is required, as, when thoroughly dry, it is scarcely so 
strong as the best Fir or Pine. 
The Baltimore Oak tree is of very slow growth (vide 
Table II., p. 17), and the timber would soon decay unless 
well protected by paint or varnish after seasoning. 
TABLE XLI.—AMERICAN (OR BALTIMORE) OAK. 
Transverse Experiments. 
Deflections, ap oped li “Total f Weight . 
Number oe --— —1 weight | 2 |reduced bad 
ofthe | With the | Afterthe| Ac | required | “5-5 | to | required 
specimen. | apparatus; weight | the crisis | to break | &@ | specific) (0. 
weighing was of each on | gravity ae 
390 Ibs. | removed. | breaking. | Piece. 1000. ae 
Inches. Inch. Toches, ; ibe. ; Ibs. 
I 1°25 ‘00 5°00 651 820 794 | 162°75 
2 1°25 "IS 7°50 837 695 | 1200 | 209'25 
3 1°35 °25 3:25 769 738 | toq2z | 192°25 
4 1°50 "15 7°15 729° | 736 | 990] 182:25 
5 135 25 7°65 | 627 | 734 | 854 | 156-75 
6 VES || 38 725 | 723 | 758 | 967 | 180°75 
Total . | 8°85 Its 42°80 | 4336 4481 | 5847 | 1084'00 
Average | 1°475 *IQI 77133 722°66| 746°83} 974°5| 180°66 
Remarks.—Nos, 1, 3, and 6 broke quite short : 2 d 5 with li 
diout Winchestn leant q + 2, 4,and 5 with a scarph-like fracture, 
