T9&&4^ 



FRAGMENTS OF SCIENCE 



FOR 



UNSCIENTIFIC PEOPLE: 



A SERIES OF DETACHED ESSAYS, LECTURES, 

 AND REVIEWS. 



BY 



JOHN TYNDALL, LL. D., F. E. 8., 



AUTHOB OF "HEAT AS A MODE OF MOTION," "LECTURES ON SOUND," ETC., ETC. 



NEW YORK : 



D. APPLETON AND COMPANY, 



549 & 551 BROADWAY. 



1871. 





