CONTENTS OF No. XLVIII. 
I. Animal Depravity. 
II. The Longevity of Brain-Workers. 
III. On the Condition of the Atmospheres of the Planets. 
IV. The Possibility of a Future Life. 
V. The Channel Tunnel. 
VI. The Arctic Expedition of 1875. 
NOTICES OF SCIENTIFIC WORKS. 
Helmholtz’s ‘Sensations of Tone as a Physiological Basis for the 
Theory of Music.” 
Tyndall’s ‘* Sound.” 
Tyndall’s “ Six Le&tures on Light.” 
Atkinson’s “‘ Natural Philosophy for General Readers and Young 
People.” 
Irving’s ‘*‘ Short ee of Heat, for the Use of Schools and Science 
Classes.” 
Gordon's ‘ Eiccientaes Book on Heat.” 
Phin’s “ Practical Hints on the Selection and Use of the Microscope.” 
Hunt’s “‘ Ure’s Dictionary of Arts, Manufactures, and Mines.” 
Morgan’s ‘ Skull and Brain ; their indications of Character and 
Anatomical Relations.” 
Higgins’s “Digest of the Reported Cases relating to the Law and 
Praétice of Letters Patent for Inventions.” i 
Dana’s “Corals and Coral Islands.” ~ 
Prescott’s ‘‘ Chemical Examination of Alcoholic Liquors.” 
Broadhead’s ‘“ le. of the Cee Survey of the State ‘of 
Missouri.” 
: Sprague’ sf Blectrisity : its Theory, Sourern: and Applications.” 
* i & ty ( 
+ HE pee ASSOCIATION FOR THE ADVANCEMENT OF Scizwen! 
CoRRESPONDENCE.—Aé€rial Locomotion. 
‘PROGRESS IN SCIENCE, 
(Including the Proceedings of Learned Societies at Home and Abroad, and 
Notices of Recent Scientific Literature). 
INDEX, TITLE-PAGE, &c., TO Vor. V. NEw SERIES. 
