COURSE OF LECTURES 



NATURAL PHILOSOPHY 



MECHANICAL ARTS. 



BY THOMAS YOUNG, M.D., 



A NEW EDITION,, WITH REFERENCES AND NOTES, 



BY THE 



REV. P. KELLAND, M.A., F.R.S., LOND. & EDINB., 



frliustratftr tn> Itumerous (Engrabtngs on 



IN TWO VOLUMES. 

 VOLUME II. - PLATES. 



LONDON: 

 PRINTED FOR TAYLOR AND WALTON, 



UPPER GOWER STREET. 

 1845. 



