5$ TARIOL'S MODES OF PltlXTING FROM AUTOGRAPHS. 



printini^ sucl) tliinp^s as this, we ou^lit to apply the paper 

 extended cjuire straight, and strike it down by a blow from a 

 flat smooth iustriiineiit of the size of the block. 

 Pontipool On a Pontipool teaboard I can with a common stile or 



^^^^' dry pcint at any time, with as much ease as 1 can draw, 



make an etchinjj where not much force is required. By the 

 same rule I can write on it, and use it as an engraved plate. 

 The paperteaboards might perhapseven be found more useful. 

 Easj' to en- On pewter, mnde very soft, it is easy to engrave, but very 



R-aveon pe«- f^^^ people know, that on copper also it is as easy to draw 

 or on copper ^^^^ **" "*^" stile, provided you prepare your ground of 

 slightly coated common white wax spread over it with a dabber when the 

 v-ax ^ ' * plat^ is hot. This thin coat of white wax is useful to re- 

 Pencil draw- c^ive a pencil tracing of your drawing, which may be depo- 

 wg< easily en- sitf d on it by a blight friction applied to the back of the 

 gtuTe I lus. papor, or if large by the rolling press; an<i also serves effec- 

 tually to prevent the dry point, or stile, from slipping when 

 you begin to scratch the copper through the waxen coat. 

 The burs you may take off by the common mode, or by 

 charcoal partially if you want effect. 



But to return from this not quite a digression, (for if we 

 can learn to write backwards this dry point graving, through 

 white wax, would be the best method of executing plates to 

 imitate writing, and is I believe now used by writing en- 

 gravers), let us consider cheapness of block as an absolute 

 Incombustible desideratum; and think whether, if we can find a material 

 m on woo . ^^^^^^ resists the effect of flame, ve may not write with that 

 material, and char the rest a little way in, so as to leave a 

 cameo letter — and if such a plan could be executed, poplar 

 and beech might by machinery be soon reduced to level and 

 cheap blocks. You will perhaps yourself smile when 1 tell 

 Blocks of car- you, that I have used blocks (if they may be so called), of 

 pieces of carrot, to impress mathematical figures of solid 

 forms for the purpose of facilitating instruction ;« and that a 

 pack of cards were thus made by a son of mine on an emer« 

 gency, using ir.dian ink instead of oil colour. 

 A seal for To Stamp priutii, drawings, or such sort of property, a vo- 



vriuisor dra^"- lutg shell ground down on a hone makes the securest seal 

 inc^ n>t easily . ,,,/.. , , i ,i ^ 



iiuuaied. in the world ; ior two cannot be made exactly alike. Sec- 



tions©^ shells ate indeed the best seals we can hav^, if we 



wish 



