making twenty-one days.

Washing, 2 days.
Taking off the hair, 10 do.
Swelling, 1 do.
Tanning, 8 do.
---------
21 days.

One ox hide, taken the 3d of September, was tanned the 2d of October,
making twenty-nine days.

Washing, 1 day.
Taking off the hair and swelling, 3 do.
Tanning, 25 do.
---------
29 days.

Another ox hide, taken the 5th of September, was tanned the 3d of
October, making twenty-eight days.

Washing, 1 day.
Taking off the hair and swelling, 2 do.
Tanning, 25 do.
---------
28 days.

N.B. The tanning solutions made use of to these hides was less strong,
and of a cooler temperature than usual, by which the time employed in
the tanning operation was prolonged.

_Calf Skins._

Sixteen very thick calf skins, taken the 18th of July, were tanned by
the 31st of the same month.

Washing, 1 day.
Taking off the hair, 8 do.
Tanning, 4 do.
---------
13 days.
---------

Six calf skins, taken the 19th of July, were tanned the 2d of August,
making fourteen days.

Washing, 2 days.
Taking off the hair, 9 do.
Tanning, 3 do.
---------
14 days.
---------

Six dried calf skins, began the 14th of August, were tanned the 28th
of August.

Washing, 2 days.
Taking off the hair and swelling, 11 do.
Tanning, 1 do.
---------