628 - 
appendix. 
[C. 
the end remote from the head, to prevent its slipping. — It should 
be fixed in the head by means of a thin, barbed iron wedge. 
For trimming specimens, smaller hammers may be employed : — 
The form of the head, recommended for this purpose by Dr. Mac 
Culloch *, is rectangular. The dimensions of the face may be 
1 inch by f ; the height 2\. 
It will be expedient to have always some hammers, of different 
sizes, in reserve. 
A small miner's pick is useful for cutting out, and splitting 
portions of slaty rocks ; or for obtaining specimens of clays, &c. 
A small stone-cutter's chisel. — A chisel with a handle, of the 
form here represented, will often save the hand of an inexpert 
collector, arid better enable him to direct his blow. 
For Packing the specimens.-— A stock of strong paper. Seal- 
ing-wax. Writing-paper^ cut into labels. Thick gum-water, to 
cement the labels to the specimens. 
For the Conveyance of specimens. — A large bag of leather, 
with straps for the shoulders. Strong canvas bags, of smaller 
size, are very convenient for subdivision and arrangement. — For 
the protection of crystals, or delicate petrifactions, &c., wool or 
* On the forms of Mineralogicai Hammers.'^ Quarterly Journal, 
(R. Inst.) vol. xi. 1821, p. 1, &c. 
