S4 



BIOLOGY 



LIBRARY 



G 



" To know nature and man is the sum of all earthly knowledge." 



G. STANLEY HALL. 



"The work of the high school should have for its central aim the 

 helping of pupils to be helpful in the home and community here and now. 

 . . . Every bit of science and every bit of literature should be taught 

 with such ends in view." A. W. BALDWIN. 



" Half a million lives are cut short and five million people are made 

 ill by preventable diseases each year. With universal knowledge of 

 hygiene and sanitation nearly all deaths from such causes could be 

 prevented." HOUSEHOLD EDUCATION LEAGUE. 



COPYRIGHT, 1911, BY 

 RICHARD W. SHARPE. 



ENTERED AT STATIONERS' HALL, LONDON. 



SHARPE'S LABORATORY MANUAL. 

 w. P. 1. 



