iv 



SCIENCE. 



BRAIN AND 



NERVE FOOD 



.VITALIZED PHOS-PHITES, 



Composed of the Vital or Nerve-giving Principles of the Ox-Brain and Wheat-Germ. 



IT RESTORES THE ENERGY LOST BY NERVOUSNESS OR INDIGESTION; RELIEVES LASSITUDE, ERRATIC PAINS AND 

 NEURALGIA REFRESHES THE NERVES TIRED BY WORRY, EXCITEMENT, OR EXCESSIVE BRAIN FATIGUE ; STRENGTH- 

 ENS A FAILING MEMORY, AND GIVES RENEWED VIGOR IN ALL DISEASES OF NERVOUS EXHAUSTION OR DEBILITY 

 IT IS THE ONLY PREVENTIVE OF CONSUMPTION. 



IT GIVES VITALITY TO THE INSUFFICIENT BODILY OR MENTAL GROWTH OF CHILDREN, PREVENTS FRETFULNESS 

 AND GIVES QUIET, REST AND SLEEP. IT GIVES A BETTER DISPOSITION TO INFANTS AND CHILDREN, AS IT PRO- 

 MOTES GOOD HEALTH TO BRAIN AND BODY. 



PHYSICIANS HAVE PRESCRIBED 300,000 PACKAGES. For Sale by Druggists or by Mail, |i. 



F. CROSBY, 664 & 666 Sixth Ave., N. Y.— London, 137 A Strand. 



DRAWING INSTRUMENTS 



And Materials of all kinds. 



OPTICAL INSTRUMENTS, 



Microscopes, Telescopes, &c. 

 G. S. WOOLMAN, 116 Fulton Street, 



NEW YORK. 

 Send for lllus. Catalogue, and mention this Journal. 



Successful Novels. 



MR. PERKINS' DAUGHTER. 



By the Marchioness Clara Lanza. 

 Note.— " It may be well to mention, that the state of 

 ' double consciousness,' or ' Periodical Amnesia,' described in 

 one of the principal personapes of this story, is not by any 

 means an isolated instance. It is, on the contrary, a pheno- 

 menon well known to neurological physicians," 



G. P. PUTNAM'S SONS, 



27 We st 2 3 rd St., NewYork. 



American Journal of Science. 



Founded by Prof. Silliman in 1818. 

 Devoted to Chemistry, Physics, Geology, Physi- 

 cal Geography, Mineralogy, Natural History, 

 Astronomy, and Meteorology. 



Editors : J as. D. Dana. Edw. S. Dana and B. Silliman. 



Associate Editors: Professors Asa Gray, J. P. Cooks, Jr., 

 and John Thuwbrii>ge, of Cambridge ; H. A. Nkwton and 

 A. E. Vherill, of Yale ; and G. F. Barker, of the Univer- 

 sity of Pennsylvania, Phila. Subscription Price $6 ; 51) Cents 

 a Number. Address the Proprietors. 



James D. & E. S. Dana, New Haven, Conn. 



New York & New England E. E. 



THROUGH TRAINS Via. N.Y., N. H. & H. R. R. 



Between Boston and New York. 



FROM GRAND CENTRAL DEPOT. 

 Leave New York, 4.00 P.M., with Elegant Through Car. 

 " " " 11.35 P.M., week days, with Through New 



Pullman Sleepers. 

 '• " " 10.30 P.M., Sundays. 



FROM DEPOT, FOOT OF SUMMER ST. 

 Leave Boston, 9.00 A.M., week days, with Through Cars to 

 Grand Central Depot. 

 " " 10.40 P.M., daily, with elegant new Pullman 

 Sleepers. 



INSTRUCTION! 



Mt. Carroll Seminary, 



CARROLL CO., ILLS. 



Incorporated 1852, with its 



MUSICAL CONSERVATORY, 



has Original Features Peculiar and Valua- 

 ble. In Thorough, Practical, Common- 

 Sense work it acknowledges no superior. The 

 Oread, giving particulars sent free. 



TAKE THE BEST. 



The International Review. 



NEW MONTHLY SERIES. 



JOHN T. MORSE, Jr., HENRY CABOT LODGE, Editors. 



Price 50 Cents a month ; $5.00 a year. Specimen copies sent post-paid 

 n receipt of 15 cents. 



AGENTS WANTED who understand the character, scope 

 and value of the Review, to solicit subscriptions. 



A*. S. BARNES & CO., 



in & 113 William Street, New York, 



II. M. RAYNOR, 



No. 25 Bond St., 



NEW YORK. 



(Established 

 1859) 



I 



ft 



Scrap Purchased 



FOR ALL 



Laboratory 



and 



Manufacturing Purposes. 



Wholesale and Retail. 



Circulars by Mail 



BEST MEDIUM FOR ADVERTISERS. 



SCIENCE 



Circulates in Every State in the Union, also Canada, Australia, 

 Japan and Europe. 



ALL UNIVERSITIES and COLLEGES. 



Subscribers to 11 Science " are chiefly among those having few facilities 

 for purchasing goods, and are buyers of Fancy Articles, Household Neces- 

 sities, Jewelry, Musical Instruments, Dry Goods, Books, Prints, Scien- 

 tific Instruments and Apparatus ; Pure Chemical Substances, Mineral 

 Waters, Novelties and Specialties of every kind. 



Terms for Advertising moderate. Smalt advertisements on this Page 

 $50 a year (52 insertions). 



MEYROW1TZ 



BROTHERS, 



OPTICIANS, 



297 Fourth Ave., N. Y. 



S. E. COR. 23D ST 



Trial Cases, Opthalmos 

 copes, Artifical Eyes, Clinical 

 Thermometers, Microscopes, 

 Electric Batteries, etc. 



Special attention given to 

 prescriptions of Oculists. 



N. B.— An Illustrated Catalogue will 

 be sent free upon request. 



OPTICAL INSTRUMENTS. 



BAROMETERS, THERMOMETERS, 



RAIN GAUGES, Etc., Etc. 

 BENJ. PIKE'S SONS & CO., 

 OPTICIANS, 



No. 928 Broadway, New York. 



Illustrated Catalogue sent free on mentioning 



" Science." 



R. & J. BECK, 



Manufacturing Opticians, 



1016 Chestnut St., Philadelphia. 



MICROSCOPES, 



And all Accessories of the Highest Grades at 



the Lowest Prices. 

 Illustrated Condensed Price List, 32 pages. Free. 

 Full Catalogue of 176 Pages. 15 cts. 

 Mention this Journal. 



American Naturalist. 



Devoted Id the Natural Sciences in their 

 widest sense. 

 Publishbd Monthly. 

 Terms, $4.00 a year. Single numbers, 35 cents. 



Editors: 



Professor A. S. Packard, Jr., and Professoi 



E. D. Cope. 

 McCalla & StavelY, Publishers, Nos. 237-9 

 Dock Street, Philadelphia, Pa. 



