C.
Potash. | 0.69 | 0.80 | 3.46
Soda. | 0.58 | | trace.
Lime. | 40.52 | 35.59 | 6.60
Magnesia. | 6.06 | 4.92 | 1.05
Oxide of iron and alumina. | 5.17 | 9.08 | 15.59
Phosphoric acid. | 0.50 | 0.77 | 1.55
Sulphuric acid. | 5.52 | 10.41 | 4.04
Chlorine. | 0.15 | 0.43 | 0.70
Soluble silica. | 8.23 | 1.40 } |
Carbonic acid. | 19.60 | 22.28 } | 67.01
Sand. | 12.11 | 15.04 } |
+-----------+-----------+----------
| 99.13 | 100.74 | 100.00
---------------------------+-----------+-----------+----------

A was furnished by Mr. Daniel Buck, Jr., of Poquonock, Conn., and comes
from a peat which he uses as fuel.

B was sent by Mr. J. H. Stanwood, of Colebrook, Conn.

C was sent from Guilford, Conn., by Mr. Andrew Foote.[5]

A and B, after excluding sand, are seen to consist chiefly of carbonates
and sulphates of lime and magnesia. III. contains a very large
proportion of sand and soluble silica, much iron and alumina, less lime
and sulphuric acid. Potash and phosphoric acid are three times more
abundant in C than in the others.

Instead of citing in full the results of Websky, Jaeckel and others, it
will serve our object better to present the maximum, minimum and average
proportions of the important ingredients in twenty-six recent analyses,
(including these three,) that have come under the author's notice.

VARIATIONS AND AVERAGES IN COMPOSITION OF PEAT-ASHES.

_Minimum._ _Maximum._ _Average._
Potash 0.05 to 3.64 0.89 per cent.
Soda none " 5.73 0.83 "
Lime 4.72 " 58.38 24.00 "
Magnesia none " 24.39 3.20 "
Alumina 0.90 " 20.50 5.78 "
Oxide of iron none " 73.33 18.70 "
Sulphuric acid none " 37.40 7.50 "
Chlorine " " 6.50 0.60 "
Phosphoric acid " " 6.29 2.56 "
Sand 0.99 " 56.97 25.50 "

It is seen from the above figures that the ash o