

FAMILIAR LECTURES ON 

 SCIENTIFIC SUBJECTS 



BY SIR JOHN F. W. HERSCHEL, BART., K. H. ; 



M.A. ; D.C.L. ; F.R.S. L. AND E. ; HON. M.R.I.A ; F.R.A.S. ; M.C.U.P.S. 



MEMBER OF THE INSTITUTE OF FRANCE ', AND 



CORRESPONDENT, ASSOCIATE, HONORARY OR ORDINARY MEMBER OF VARIOUS OTHER 

 ACADEMIES AND INSTITUTIONS 





ALEXANDER STRAHAN, PUBLISHER 



LONDON AND NEW YORK 



1866 



