John Ruskin 
Elements of Drawing [PDF ebook] 
In Three Letters to Beginners

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Wisely trained in their exercise from his ear liest years, acquired a mastery of draughts manship such, in some particulars, as few of the greatest artists hav f For sev.