LIGHT SCIENCE FOE 

 LEISUEE HOUES. 



A SERIES OF FAMILIAR ESSAYS 



ON 



SCIENTIFIC SUBJECTS, NATURAL PHENOMENA, &c. 



BY 



RICHARD A. PROCTOR, 



AUTHOR OF 'TUB SUN ' 'OTHER WORLDS THAN OURS* ' SATURN 1 ETC. 



I bear you witness as ye bear to me, 



Time, day, night, sun, stars, life, death, air, sea, earth.' 



Swinburne. 



NEW EDITION. 



LONDON : 

 LONGMANS, G R E E*N, AND CO. 



1886. 



