ASTEOJSTOMIOAL REVELATIONS : 



In which the true physical causes of the precession of the 

 equinoctial points ; the apparent secular acceleration of the moon's 

 mean motion ; the decrease in the obliquity of the ecliptic ; 

 the apparent aberration of the stars ; and the apparent nutation 

 of the earth's axis are now, for the first time, made known 

 and explained. To which is added a theory of the physical 

 nature of the fixed stars. Crown 8vo, 62 pages, half morocco, 

 price 12.00. 



EDWARD DEXTER, 



1215 Broadway, New York. 



BEaKER BROTHERS, 

 No. 6 Murray Street, New York, 



Manufacturers of Balances and Weights of Precision for Chem- 

 ists, Assayers, Jewelers, Druggists, and in general for every use 

 where accuracy is required. 



April, 1871.— [tf.] 



PITELICAIIOITS OZB 1 THIS 



JOHNS HOPKINS UNIVERSITY. 



I. American Journal of Mathematics. S. Newcomb, Editor, and T. Craig, 



Associate Editor. Quarterly. 4to. Volume "VIII in progress. $5 per 

 volume. 



II. American Chemical Journal. — I. Kemsen, Editor. Bi-monthly. 8vo. 



Volume VIII in progress. $3 per volume. 

 HI. American Journal of Philology. — B. L. G-ildersleeve, Editor. Quar- 

 terly. 8vo. Volume VII in progress. $3 per volume. 



IV. Studies from the Biological Laboratory. — Including the Chesapeake 



Zoological Laboratory. H. N. Martin, Editor, and W. K. Brooks, Asso- 

 ciate Editor. 8vo. Volume III in progress. $5 per volume. 



V. Studies in Historical and Political Science. — H. B. Adams, Editor. 



Monthly. 8vo. Volume IV in progress. $3 per volume. 



VI. Johns Hopkins University Circulars. — Containing reports of scientific 



and literary work in progress in Baltimore. 4to. Vol. V in progress. $1 

 per year. 



VII. Annual Report. — Presented to the President by the Board of Trustees, 

 reviewing the operations of the University during the past academic year. 



VII. Annual Register. — Giving the list of officers and students, and stating 

 the regulations, etc., of the University. Published at the close of the Aca- 

 . dernic year. 



Communications in respect to exchanges and remittances may be 

 sent to the Johns Hopkins University (Publication Agency), Baltimore, 

 Maryland. 



