645
PAPERS.
TENSILE TESTS OF PAPERS.
For records and blue-printing purposes.
Samples 1" wide by 3" long, free length. Duplicate samples taken out side by side.
Tensile strength.	
	Per
Total.	square
	inch.
Pounds.	Pounds.
49.0	5,440
49.5	5,500
48.5	6,830
47.0	6,620
55.0	9,320
54.5	9,240
42.5	5,900
45.0	6,250
36.5	6,290
37.0	6,380
28.0	6,830
27.5	6,710
19.5	5,740
19.0	5,590
32.0	9,700
31.5	9,550
25.5	5,540
27.0	5,870
21.5	4,300
21.0	4,200
Thick-
ness.
Description.
Inch.
.0090
0071 ÓÓ59*
0072	* 0058* 004i* ÓÒ34* ÒÒ33
׳0046
ÒÒ5Ó*
Byron Weston Co.’s linen, 48" x 72", 600 pounds.
Byron Weston Co.’s linen, 27" x 40125 ,״ pounds.
Byron Weston Co.’s linen, 23" x 28", 65 pounds..
Crane & Co.’s artificial parchment, No. 56......
Crane & Co.’s parchment deed, No. 44............
Crane & Co.’s parchment deed, No. 31..........
Johannot (Frost & Adams, Boston, Mass.), 70 grams . Johannot (Frost & Adams, Boston, Mass.), 110 grams “Columbia” (Keuffel & Esser, New York), No. 224 .. "Hyperion” (Eugene Dietzgen & Co., Chicago)...