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VETERINARY HYGIENE 



note " or " detail " paper, is recommended. This is very suitable 

 for working up sketch plans, plans of alterations, and even working 

 drawings for works of minor importance. This paper, of which 

 there is a variety of classes, usually takes colour and ink well, and 

 is much more durable than the more expensive, although more 

 transparent, tracing papers, which contain oil and turpentine, and, 

 getting brittle, tear easily. 



The draughtsman will also require a few bottles of drawing-ink 

 black, blue and crimson, and a few cakes of water colour. The 

 following is a list of the colours required for ordinary use, with 

 the materials which they usually represent : 



MATERIAL. 



Steel (in elevation) 

 Steel (in section) . 

 Lead . 

 Stone (in elevation) 

 Stone (in section) . 



Brickwork (in elevation) 

 Brickwork (in section) . 

 Concrete (in elevation) . 

 Concrete (in section) 



Undressed timber (in 



elevation) 

 Undressed timber (in 



section) 



Glass .... 

 Plaster .... 

 Slates .... 

 Tiles .... 

 Finished woodwork 



COLOUR. 



Light Prussian blue. 

 Strong Prussian blue. 

 Indigo or neutral tint. 

 Light burnt umber. 

 Strong burnt umber, with a little 



crimson lake added. 

 Crimson lake, with a little burnt umber 



added. 

 Vermillion or strong crimson lake, 



with a little burnt umber added. 

 Light indigo, with a very little crimson 



lake added. 

 Stronger indigo, with a very little 



crimson lake added. 

 Raw sienna or gamboge, with a little 



yellow ochre added. 



Burnt sienna. 



A light wash of ultramarine. 

 A light wash of Payne's grey. 

 Indigo or sea-green wash. 

 A light wash of Indian red. 

 A light wash of bright green. 



Practice. When starting a drawing, decide the scale to which 

 the work is to be carried out, the number of plans, sections and eleva- 

 tions likely to be required on each sheet, and calculate the size of 

 paper most suitable. A quarter of a double elephant sheet is a 

 very suitable size for ordinary small work. Several small drawings 

 are handier than one large sheet of drawings. 



