The following tables relating to the properties and chemical composition of building stones, and to stone buildings, have been compiled by the author from various sources (principally from several volumes of Stone and Merrill's Stones for Building and Decoration), and are believed to be reliable:

Table A. Showing The Weight, Crushing Strength And Ratio Of Absorption Of Various Building Stones

Kind of Stone.

Locality.

Approximate size of cube in inches.

Position.

Strength per square inch.

Weight per cubic foot.

Ratio of Absorption.

Granite (Biotite).....

Vinalhaven, Me........

2

Bed

15,698

163

.....

"

Dix Island, Me.......

2

....

15,000*

166.5

....

"

Hurricane Island, Me....

2

Bed

14,425*

166.9

....

"

" ".......

2

Edge

14,937*

166.9

.....

"

Fox Island, Me.......

2

........

14,875*

164.1

.....

"

Keene, N. H........

2

Bed

10,375

166

1/800

Granite (Hornblende)

Cape Ann, Mass.......

2

Bed

12,423*

............

........

"

" "...........

2

Bed

19,500*

............

........

Rockport, Mass........

2

Bed

16,300

163.2

1/152

Edge

19,750

"

Quincy, Mass.....

2

........

17,750†

166.2

........

"

"................

2

..........

14,750†

168.7

........

Granite (Biotite)..........

Milford, Conn.....

6

........

22,610

.........

........

"

Westerly, R.I............

2

.......

17.500

165.6

........

"

"...............

2

Edge

14,937*

166.9

........

"

Huron Island, Mich......

2

Bed

18,125

164.4

1/659

"

" "............

2

Edge

14,425

163.7

1/363

Granite (Hornblende)

East Saint Cloud, Minn.

2

Bed

28,000

168.2

• • • •

Edge

26,250

"

Saint Cloud, Minn......

2

Bed

16,000

168.2

1/239

Edge

18,500

Granite (Gabbro)............

Duluth, Minn........

2

Bed

17,631

175

• • •

Granite (Biotite)....

Tarrytown, N.Y........

2

Bed

18,250†

162.2

• • • •

"

Staten Island, N. Y......

2

Bed

22,250}

178.8

• • • •

"

Gunnison, Colo.......

2

Bed

12,976

.006

• • • •

Edge

15,594

"

Platte Canon, Colo....

2

Bed

14,585

.006

• • • •

Edge

14,634

Limestone (Dolomite)

Joliet, Ill.......

2

Bed

14,775*

160

1/94

"

Lemont, Ill.........

2

Bed

12,000*

165.3

1/89

"

Quincy, Ill...........

2

Bed

9.687*

160.6

1/180

Limestone (Oolitic)

Bedford, Ind.........

. .

• • • •

6,500

147

1/24

"

"............

. .

• • • •

10,125

152.4

1/32

"

" (buff)..........

....

..........

14,000‡

........

........

"

Salem, Ind........

. .

....

8,625

144.3

1/22

Limestone (Dolomite)

Stillwater, Minn.......

2

Bed

25,000

172.6

1/251

Edge

25,000

"

"..................

2

Bed

10,750

160.4

1/40

Edge

12,750

* Burst suddenly. † Cracked before bursting ‡ Tests made at U. S. Arsenal, Watertown, Mass.

TABLE A, - (Continued.)

Kind of Stone.

Locality.

Approximate size of cube in inches.

Position.

Strength per square inch.

Weight per cubic foot.

Ratio of Absorption.

Limestone (Dolomite)....

Red Wing, Minn.......

2

Bed

23,000

162.2

1/40

Edge

23,250

Limestone (Magnesian)...

Glens Falls, N. Y........

2

Bed

11,475

168.8

....

Edge

10,750

"

Lake Champlain, N. Y.

2

Bed

25,000

171.9

....

Edge

21,500

Marble (Dolomite).....

Lee, Mass............

6

Bed

22,900

......

" ......

Centre Rutland, Vt......

6 ‡

....

10,746

166.6

.........

" ..........

Dorset, Vt...........

2

Edge

8,670

167.8

..........

" ..........

"Cherokee," Georgia.....

6

10,976

......

......

" ..........

" ..........

4‡

13,415

......

......

" ..........

" ..........

4 ‡

11,822

......

......

" ..........

"Creole," Georgia.....

6

12,078

......

......

" ..........

" ..........

4 ‡

11,420

......

......

" ..........

" ..........

4 ‡

15,512

......

......

" ..........

"Etowah," Georgia........

6

10,642

......

......

" ..........

" ..........

4 ‡

14,217

......

......

" ..........

" ..........

4 ‡

13,888

......

......

" ..........

" Kennesaw," Georgia

4 ‡

8,354

......

......

" ..........

" ..........

4 ‡

10,771

......

......

Marble (Pink)......

East Tennessee.......

2

15,750

......

1/1220

Marble (White).......

" ..........

2

17,212

......

1/1240

" ..........

" ..........

2

14,812

......

1/1480

Marble (Dark Pink).......

" ..........

1

I3.750

......

1/1070

Sandstone (Brownstone)......

Portland, Conn.........

2‡

13,980

......

......

" ..........

" ..........

2‡

13,330

......

......

" ..........

" ..........

3 ‡

13,920

......

......

" ..........

" ..........

3 ‡

15,020

......

......

" ..........

" ..........

2‡

9,900

......

......

" ..........

Cromwell, Conn........

2‡

Bed

12,250

Average of 6 tests

Sandstone (Con.)......

" Brown (soft)...

East Longmeadow, Mass

4‡

8,437

......

......

(hard)..

" ..........

4 ‡

14,085

......

......

" (Kibbe).....

" ..........

6 ‡

12,619

......

......

" ..........

Potsdam, N. Y.........

2 ‡

18,401

......

......

" ..........

" ..........

2‡

42,000

......

......

" (lilac color).....

Medina, N. Y........

2

Bed

17,250

150.6

1/55

" (light).......

North Amherst, Ohio.......

2

Edge

5,450

133.7

1/19

" "............

" ".........

2

Bed

6,212

135.8

1/19

" "........

Berea, Ohio.........

6

Bed

6,510

......

......

" ".............

" ..........

2

Bed

8,222

134

1/21

" "...........

Cleveland, Ohio..........

2

Bed

6,800

140

1/37

" "............

Hummelstown, Pa........

6

Bed

12,810

......

......

" "............

Fond du Lac, Wis.......

2

Bed

6,237

138.8

1/22

" (hard, red).......

Saint Vrains, Colo........

2

Bed

11,505

149.3*

.061

" (hard, gray).......

Fort Collins, Colo.......

2

Bed

11,707

140.7

.072

" "........

Stout, Colo..........

2

Bed

10,514

141.2

. 066

(light red).......

Manitou, Colo............

2 ‡

Bed

11,000

140

....

" ".............

" ...........

2

Bed

6,000

......

....

*Burst suddenly. † Cracked before bursting.

‡ Tests made at U. S. Arsenal, Watertown, Mass.

TABLE A. - (Continued.) SLATE.

Locality.

Modulus of Rupture.

Weight per cubic foot.

Porosity.

Corrodibility.

Albion, Penn.............................

7,150

lbs.

173.2

0.238

0.547

Old Bangor, Penn.......................

9,810

"

173.5

0.145

0.446

Peach bottom region, Penn..................

11,260

"

180.4

0.224

0.226

Table B. Showing The Chemical Composition Of Various Building Stones.* Granites

Description.

Locality.

Silica.

Alumina.

Iron Oxides.

Lime.

Potash and Soda.

Light.........

Monson, Mass...............

73.47

15.07

1.15

4.48

5.97

Dark............

"...........................

69.35

18.83

2.00

5.94

3.78

Hornblende........

East Saint Cloud, Minn.

65.12

16.96

4.69

4.77

5.25

" ..............................

".....................

74.43

12.68

3.82

1.28

3.88

Diabose.............

Duluth, Minn....................

50.43

23.83

17.63

4.79

2.40

Gabbro..............

................................

48.51

13.79

19.34

8.34

t.86

Sandstones

Description.

Locality.

Silica.

Alumina.

Iron Oxides.

Lime.

Water and Loss.

Maynard (red).....

E. Longmeadow, Mass..

79.38

8.75

2.43

2.57

2.79

Worcester (red)............

" "..

88.89

5.95

1.79

.27

1.83

Kibbe quartz.......

" " ..

81.38

9.44

3.54

.76

4.49

Brownstone..........

Portland, Conn

69.94

13.15

2.48

3.09

1.01

" ...................

" ...................

70.11

13.49

4.85

2.39

7.37†

Sandstone

Stony Point, Mich

84.57

5.90

6.48

1.92

Portage Entry (red)...

Lake Superior, Mich

94.73

0.36

2.64

0.69

.83

Quartzite........

Pipestone, Minn

84.52

12.33

2.12

0.31

2.31

Buff

Amherst, Ohio

97.00

1.00

1.15

.21

Berea.......

Berea, Ohio.........

96.90

1.68

. 55

.32

Euclid Bluestone..........

Euclid County, Ohio

95.00

2.50

1.00

1.50

Columbia

Columbia, Ohio

96.50

2.00

Red

Laurel Run, Pa

94.00

1.90

1.10

1.92

Elyria..........

Grafton, Ohio

87.66

1.72

3.52

. 17

2.03

Sandstone

Fond du Lac, Minn

78.24

10.88

3.83

.95

....

" ...................

Flagstaff, Arizona

79.19

3.75

7.76

3.26

" ...................

Dorchester, N. Brunsw'k

82.52

7.07

3.55

1.83

3.61

*Some minor elements occurring in very small quantities and not affecting the durability of the stone are omitted.

† Potash and soda.

Table B. - (Continued.) Limestones Other Than Marbles

Description.

Locality.

Carbonate of Lime.

Carbonate of Magnesia.

Oxides of Iron.

Oxide of

Aluminium.

Silica and insoluble residue.

Water and Loss.

Dolomite.............

Lemont, Ill...............

45.80

..........

2.30

7.00

15.90

6.90

Oolitic..............

Bedford, Ind..........

96.60

0.13

0.98

0.50

0.96

" ..............................

" ..............................

97.26

o.37

0.49

....

1.69

0.19

" (buff)...............

" ..............................

98.20

o.39

o.39

....

0.63

" (blue)...............

" ..............................

97.26

o.37

0.49

....

1.69

" ..............................

Spencer, Ind..............

96.80

0.11

0.91

....

0.70

0.92

Oolitic..................

Bowling Green, Ky....

95.31

1.12

o.39

1.42

1.76

Dolomite....................

Minneapolis, Minn...........

54.53

36

0.90

3.16

16.22

o.375

" ..............................

" ..............................

41.88

24.55

4.03

....

29.93

" ..............................

" ..............................

75.48

6.81

1.70

....

14.45

1.60

" ..............................

Kasota, Minn..............

49.16

37.53

1.09

13.06

" ..............................

Stillwater, Minn............

50.22

37.39

0.78

0.64

8.54

" ..............................

Frontenac, Minn..........

54.78

42.53

0.36

0.31

2.93

Limestone...........

Dayton, Ohio..........

92.40

1.10

0.58

1.70

1.08

Dolomite................

Springfield, Ohio.........

54.70

44.93

0.20

....

0.10

Limestone (Caen).........

Aubigney, France.........

97.60

1.70

"(Oolitic).......

Portland, England.........

95.16

1.20

0.50

....

1.20

1.94

Marbles

Description.

Locality.

Carbonate of Lime.

Carbonate of Magnesia.

Oxides of

Iron and

Aluminum.

Insoluble Residue.

Dolomite.............

Hastings, N. Y.......

52.82

45.78

....

" (white)...........

Sing Sing, N. Y............

53.24

45.89

...

" ..............................

Tuckahoe, N. Y...........

61.75

38.25

....

" (white)

Pleasantville, N.Y......

54.62

45.04

0.23

" ..............................

Lee, Mass.............

54.62

43.93

. 365

Limestone (whit

Rutland, Vt............

97.73

.59

1.68

" (greenish)

" ..............................

85.45

14.55

....

" (white)......

West Rutland, Vt........

98.00

..........

0.57

" (bluish gray).....

Proctor, Vt............

98.37

0.79

0.005

0.63

"(light colored).

" ..............................

96.30

306

....

0.63

" ..............................

East Tennessee.......

98.78

0.67

0.26

.08

Georgia Marble Co.....

Georgia..........

97.32

1.60

.26

• ...............

Southern Marble Co......

" ..............................

98.96

0.13

.22

• • . •

" ..............................

" ..............................

98.52

0.88

....

• • • •

Carrara (white)..........

Italy..........

99.24

0.28

....

• • . •

" ..............................

" ..............................

98.76

0.9

1.08

0.16

Table B. - (Continued.) Onyx Marbles

Source.

Color.

Weight per cubic foot.

Carbonate of Lime.

Carbonate of Magnesia.

Carbonate of Iron.

Hacienda del Carmen, Mexico..........

Light green

171.87

89.36

3.00

5.24

Mayer's Station, Arizona..............

" ...........................

171.87

93.93

0.56

5.50

" " ..............................

Red brown..........

166.87

93.82

o.53

4.06

Cave Creek, Arizona..................

Light green..............

171.87

93.48

1.07

5.19

Suisin City, California................

Dark amber............

170.62

95.48

2.20

....

Sulphur Creek,.................

" ...........................

167.5

.....

.........

....

San Luis Obispo, California..............

White...............

170

93.68

1.43

3.93

Rio Puerco, Valencia County, New

Mexico...............................

Light green..............

179.37

.......

.....

.......

New Pedrara, Lower California...........

Faintly green..............

174.37

90.16

1.66

6.97

" " ..............................

White, rose tinted........

173

93.48

1.68

4.19

" " ..............................

White......................

174

96.86

0.24

2.79

" " ..............................

Faintly green...............

174.37

91.09

0.64

7.49

Near Lehi, Utah..............................

Yellow...................

170

97.61

0.23

....

Slates

Source.

Silica.*

Alumina.*

Protoxide of Iron.*

Peroxide of Iron.*

Magnesia.

Alkalies.

Rutland County, Vt. (sea green)..........

65.02

16.02

5.44

2.99

2.00

4.16

" (unfading green)........

64.71

7.84

5.44

7.23

1.63

6.92

" (purple).........

62.37

13.40

4.21

7.66

0.90

7.20

Granville, N. Y. (red)..............

73.97

5.16

1.74

10.17

1.43

3.92

Old Bangor, Penn. (dark)...............

56.97

26.05

2.69

2.31

Albion, Penn. (dark)......................

55.18

........

25.57

carbon

2.10

4.00

Peach Bottom Region, Penn. (dark).........

58.37

21.98

10.66

0.93

1.20

1.93

* These are the valuable constituents. " Peroxide of iron is probably the coloring matter."