SCIENCE 



SHOKT CHAPTEES. 



BY 



W. MATTIEU WILLIAMS, F.R.A.S., F.C.S. 



AUTHOR OP 



Tfie Fuel of the Sun," " TJirougJi Norway with a Knapsack,' 

 "A Simple Treatise on Heat," etc. 



YORK: 



JOHN B. ALDEN, PUBLISHER. 

 1883. 



