CONTENTS OF VOLUME XIX. 
NUMBER LV. 
és . 
a. Page. 
_ Agr. I. Account of some Volcanic Springs in the Desert of the 
Colorado, in Southern California; by Joun L. LeConte, M.D., 1 
II, On the — Distribution of Crustacea ; ae JAMES 
D. Dan - ‘ 6 
Pa IIL. aa to Hhisaraicee’ ; oe Dr. Fr . were ae ee | 
yy IV. On the Diamagnetic Force; by Prof. Tynpatt, - 24 
\% ¢ V. Reply to some remarks by W. H. Wenham, ‘and Notice of 
\ ~. a new ae. of a na i Test- paced YY Professor 
\y J. W. Bar : 28 
ay 
VI. On the aA of the Pe sod oe Fie colo Ob. 
servations at Hobarton and the Cape of Good Hope on the 
general theory of the Variations of eee Phenom- 
ena; by Professor Dove, - 31 
VII. On iis Composition of Eggs in the re series of ae 
Part I. By A. VaLeNcIENNES and Fremy,~— - 33 
VUl. The habe or Indian Method of Notation; by ne t. 
| McLeop, . - 
IX. On the Effect of ba ee of ‘ee REE es on ne 
Mean Level of the Ocean ; by rs iia Sir James Cuark 
Ross, R.N., F.R.S., ° 52 
xX. Report to me Nopdiasa of Sciences, Paris, on the Reatpscak > 
relative to Earthquakes of M. Alexis Perrey ; by the Com- 
mission, MM. Lrovvinus, Lamé, and Evte'DE Beaumont, 55 
XI. On the Periodical Rise and Fall of the — a Se 
Lacuian ‘ all 
XI. Synopsis of the {chitipalogieal Pui of ti Pacific slope of 
North America, chiefly from the collections made by the 
U.S. Expl. Exped. under the command of Capt. C. Wilkes, 
with recent Additions — with Eastern pets ; 
by L. Acassiz, - 71 
pe Xa agra on Solution ‘end the Chemical ence’ ts 
: _ TS, Hun, he ise oe. me ae ac 
