

Fig. 84, observing again that ho must not as yet cross them at 

 Bright angles. Perhaps he may ask, why not as yet ? is there any ] 

 decided objection to lines crossed at right angles ? Certainly 

 not, when done by an experienced hand : hut tho reason why we 

 object to his crossing them in that w:iy at ]>ivs. nt is because ho 

 will have first to acquire tho power of making all his lin. 

 in ton?, thickness, and strength, and at regular intervening dis- 

 tances ; and this we know will demand all thi- thought and care 

 he can bestow for a while before he must attempt to cross them 



| direction. 



The reason for commencincr tho lino (as shown at o, Fig. Si 

 rfirmly, and then gradually lifting up the pencil when drawing 



lines for an even tint of shade of some extent is, that we mag 

 continue tho line by the manner of c, ao that tho extremit 

 these lines as they lap over one another may form an even line 

 without any perceptible joint Very probably it may be neces- 

 sary to repeat tho example c many times ucoeiuan cly (I 

 depends upon tho extent of the shadow), and then we finally end 

 with the example a. Let tho pupil draw a square of about four ot 

 five inches' ride, and fill it up by this method of making an even 

 shade tint If ho were to work the whole spa 

 portions similar to Fig. 82, the joints 



show, and spoil tho tint : the edge, 6 c (Fig. 82). would be shown 

 across tho shadow as many time* as tho portion was wncated. 



