Miscellaneous Intelligence. 287 
freestone was observed, where the calcareous crust had scaled off, with 
the blocks first came from the hands of the stone-mason, more than 
twenty years ago.” 
The same report by the Regents of the Smi thsonian Institution, con- 
tains the following table giving the results of experiments .G 
Page, to ascertain the relative disintegrating mmo of frost upon stones 
used for building. The process of Brard was adopted, which substi- 
tutes the a of sulphate of soda for the freezing of water. 
Inch cubes of the several kinds of stone were dipped into a solution 
following a are the ele 
Specimens ; [ Specific Loss by 
marked. » | gravity. - |frost, in grs. 
No. 1 |Not tested; the specimen being too sma 
No. 2 |Symington’s close-gr ained marble (similar to 4 
Worthington’s) 2-834 0-19 
No. 3 iGownsctiont ‘sandstone, coarsest-grained quality not ascer-} 14-36 
ine 
No. 4 |Dark red Seneca sandstone ew to eee) s) 9-672 0-70 
No. 5 |Symington’s large pre rble 857 0-50 | 
No. 6 |Symington’s blue limestone 2-613 0°34 
No. 7 |Coarse, large crysta tal marble, Mt. Pleasant, N. York} 2-860 0-91 
No. 8 |Port Deposite g 609 5-05 
No. 9 |Too ll to exa 
No. 10 /Trinity sandstone, povided and light-colored |notascer-| 1-58 
No. 11 |Connecticut sandstone, finer- a pnality 5 24-93 
No. 12 |Nova Scotia sandstone, coarse-graine 2518 2:16 
No. 13 |Light Seneca sandstone, dove- — 2-486 1-78 
No. 14 |Pennsylvania marble, a —— ‘ : 2-727 0-35 
No. 15 |Pennsylvania blue limest 2-699 0-28 
4TC (Trinity church light oelared, close- grained sand- 
stone, New Jersey ‘ 2-482 0-62 
PO eega part pent sandstone . . 2-230 18-60 
SB |Softb : . 2-211 16°46 
HB Hard b - | 2294 1-07 
1D Giasivs ye Potomac Great Falls 0°35 
2D |Dark coarse sandstone, of Seneca aqueduct, Peter's z 
quarry S 5°60 
3D (Sandstone four miles above Ls 2 D, Peter’ s, next! | & 
west of Beaver dam 3 1-58 
4D |Dark saci from quarry near Wood's resi- z 
nce ~ 3°94 4 
5D Not tested, specimen being too small. z 
6D ‘Lower stratum, aeimitc dam quarry 1-72 
its general characteristics is like a nail or spike machine. It rolls the 
wire into a flat rod which is received into proper dies, where it is held, 
cut off, and punched into the general form of type, and a die of proper 
form resembling a header die is brought up against the end of it, form- 
ing the required letter—when it is discharged and another blank re- 
ceived. Those acquainted with spike machinery will easily unde: 
