C 155 ] 



tînâured with colour, at firft, and gradually 

 proceeding to ufe it more ftrong in your ftia- 

 dows, employing no white at all throughout 

 your work, but carefully leaving the white of 

 your paper in the high lights of white objeds, 

 and very thinly wafting the lights in coloured 

 bodies. You are to obferve, that this method 

 is no more than making a drawing in Indiaa 

 ink, only inftead of making it all black, you ufe 

 fine prepared colours in the different parts of your 

 pidture. 



I have fpoken already of the management and 

 mixture of colours. Prints may be coloured 

 this way, without white intermixed ; all the 

 prints in my Natural Hiftory being without 

 white, for fuch water- coloured prints, or draw- 

 ings, as have white mixed in their colours, are 

 apt to change black. In order to procure co- 

 lours that will be exceeding fine, and run very 

 fmooth in this way of wafhing, mix a little 

 gummed colour in a large fliell, and work it 

 well with your finger ; then thin it with water, 

 and let it fettle a little, and by pouring a little 

 oflF the top of it into another clean ihell, you 



will 



