MODELLING-COMPOSITIONS, CEMENTS, ETC. 8i 



This composition is of the highest value for modelling 

 under the skin inside the lips, eyes, and noses of mammals, as 

 it hardens soon, but is amenable to working with warm fingers 

 or a warm iron for alterations, and is valuable in sticking 

 closely to the skin, and not coming away or getting out of 

 shape in parts already modelled, when additions are required. 

 Its lightness and rapidity of drying make it a first-class sub- 

 stitute for clay, which has not those qualities, and it is only 

 rivalled, and not surpassed, in the only good quality possessed 

 by clay — facility of handling. 



62.— Plaster Putty (M.B.) 



Best " S.F." (superfine) plaster of Paris . . 4 oz. 



Boiled oil . . . . . i ,, 



Mix together until of the substance of ordinary putty ; it 

 is then easily worked between the fingers, and can be used for 

 many purposes, especially for introducing under skins and for 

 filling up cracks in various things {i.e. models). It ultimately 

 dries exceedingly hard. 



Plaster of Paris may also be mixed with weak glue as a 

 water putty, but must be used at once, as it dries rapidly. 



WAX COMPOSITIONS 



White Wax 



Madras wax, which is rather expensive, takes tube and dry 

 colours without the purity of either being affected, but, although 

 indispensable for the modelling of foliage (see Chap. IX.), it 

 need only be used for the legs and bills of birds when delicate 

 tints are required. For ordinary purposes of this kind, and for 

 modelling in general, it may be replaced by any of the com- 

 moner, coarser waxes which follow. 



6 



