Box 14,Folder 15: Fossils 1865-1870

Specific gravity of Carbon in 1.76 = 1760 oz or 110 pounds pr cubic foot Ash in (say) 2.50 2500 oz or 156 1/4 " " " [line drawn]

Brier hill coal 1.32 1320 oz 82 1/2 " " " " Ash 3.46 2.8545 lbs in 1 cubic foot = 0.088 cubic feet sp 2.50 Bit 38.13 31.4573 " " " " .544 sp= (0.925 3.) ["3" written in superscript] Carb 58.41 [totaling line drawn under "58.41"] 48.1882 [totaling line drawn under "48.1882"] " " " .438 [totaling line drawn under ".438"] 100. 82.5 " " " 1.000 [line drawn]

Breckenridge 1.15 02 // 1150 Ash 8.50 Bit 6434 Carb 27.16

[embossed stamp at u.l.] [inscription in pencil, u.l.: [1865?] ]

[handwritten letter in black ink, below]

Area of Illinois 55, 405 square miles 35.459 200 acres Area of Coal Measures 38.000 square miles 24 320.000 acres

About 2/3 of the total area of the state is therefore occupied by the Coal Measures.

It is not probable however that more than about 30,000 sq. miles (19,2000,000 acres) are ["are" crossed out] of the coal measures area is underlay by workable beds of coal.

A bed of coal 5 feet would contain 2#17800 cubic feet of solid coal pr acre. #54.450 ["154.450" underlined] Deduct 1/4 for pillars left to support roof &c 163,350

[There is a squiggle mark running through the following 22 lines] 80 pounds is about the weight of 1 cubic foot. [line drawn] 2000) #13,068,000 pounds pr acre [line drawn] #6534. tons per acre [line drawn] 19,200,000 acres of coal [line drawn] 206,800,000 #94806 [line drawn] 10534 [line drawn] 202,252,800,000 ["202,252,800,000" crossed out] Tons of Coal in Illinois! [line drawn] About 5 1/2 acres of coal already removed 6 534 5 1/2 [totaling line drawn] 32670 3267 [totaling line drawn] 35,937 tons already removed

[Written vertically on the right edge of the paper] Sp. Gr. by New Baumbach 1.27 = 16) 1270 [totaling line under "1270"] // 79.37 oz pr cubic ft. // or say 43,560 80 lbs pr cubic foot [totaling line drawn] 3,484,800 5 [totaling line drawn] 17,424,000 [totaling line drawn] 8712 2178[totaling line drawn] / tons per acre // less 1/4 for waste, pillars &c // net product pr acre. 6,534

Area of Penn ° 43,960 sq. Miles — 20 000 of it coal " Ill 55405 " " 38000 " "

[small pin adhered to u.l., holding sheets together]

February [written vertically] [line drawn]

Soil 32

[line drawn] [illegible] 3 [line drawn]

Shale 11

[line drawn]

Limestone [illegible] 17

[line drawn]

Shale 35

[line drawn]

Sandstone 86

[line drawn continues to the right into a pen sketch that is cut off]

Shale 30

[line drawn] 2[vertical line drawn]21

[line drawn]

soil 32

[line drawn] limestone 3 [line drawn]

Shale 10 [line drawn]

FossiliferousLimestone 17

[line drawn]

Shale 37

[line drawn]

Sandstone 86

[line drawn]

Shale 31

[pen sketch] Coal // Fb10

[embossed stamp at u.l.] [inscription in pencil, u.c.: [1865?] ]

Rail Road Station at La Salle 120 feet below L. Mich Fairbury 108 feet above L. Mich

[pen sketch/map/graph with text]