THE BOOK OF THE LANTERN. 165 



finger, and then use it, without any fresh application of 

 paint, to merge the two colours into one. In this way 

 it will be found, after a little practice, that a good junction 

 can be made, and that one colour will exhibit a regular 

 gradation into the other. If this work is well done, the 

 effect will be found to be a most pleasing one,, and should 

 not be meddled with by the addition of clouds. 



Our painting has now progressed to a certain stage. The 

 sky has been laid in, the clouds have been wdped out, and 

 the shadows have received a delicate purple tint. The 

 whole has been submitted to a baking operation, by which 

 the attached colours are made so hard and firm, that it 

 would be difficult to remove them without destroy ing at the 

 same time the gelatine film upon which they are superposed. 

 We now place this unfinished sketch again upon the glass 

 easel, and will endeavour to turn it into a finished picture. 

 It is at present what Mr. Whistler would call " an arrange- 

 ment in purple and blue." We will endeavour, by working 

 over these tints where required, and by adding others, to 

 produce a general harmony of effect, as nearly approaching 

 to nature as possible. 



Any one possessing artistic feeling, and no one without 

 that faculty will make a really good slide-painter, although he 

 may easily come up to a common standard, will, on first 

 looking at the subject for colouring, make up his mind as 

 to the way in which he means to treat it. He will arrange 

 to have a cloud mass in one place, possibly to relieve a 

 church steeple or other high building, or a bright horizon 

 where, possibly, lights are to be seen through tangled 

 masses of foliage ; or in other ways he will have in his 



