158 THE BOOK OF THE LAN1ERN. 



is far more serviceable than an ordinary leather stump. 

 The rough side of the leather should be used as the rub- 

 bing surface, and, by altering its position on tbe stick, 

 sometimes letting a soft ragged edge touch the paint where 

 a fleecy cloud is to be described, and sometimes using the 

 material tightly stretched over its support where bold 

 touches are necessary, a great number of different effects 

 can be secured. The sky being finished, it will be convenient 

 now to put in any other parts of the picture where blue 

 or purple is required. The distant hills can be covered 

 with the sky tint, mingled judiciously with a little crimson - 

 lake. Water, in which the sky is reflected, will, of course, 

 be painted in with the sky colour. Shadows generally will 

 also partake of the purple tint already mentioned. These 

 are all laid in with the brush, as before indicated, and, time 

 having been given for tbe partial evaporation of the turpen- 

 tine, they; must be gently dabbed with the finger. No care 

 need be taken about transgressing over other portions of 

 the picture where blue or purple has no business to be. 

 These can be wiped clean with leather or stump, after the 

 tints have been satisfactorily laid in. 



