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 j 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 thTs Journal. 



Successful Novels. 



MR. PERKINS' DAUGHTER. 



By the Marchioness Clara Lanza. 

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

 1 doable consciousness,' or * Periodical Amnesia,' described in 

 one of the principal personages of this story, is not bv any 

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

 menon well known U> neurological physicians." 



G. P. PUTNAM'S SONS, 



27 We st 23rd St., New Vork. | 



INSTRUCTION! 



American Journal of Science. : New York & New England E. R. 



Founded by Prof. Silliman in 1818. 

 Devoted 10 Chemistry, Physics, Geology, Physi- 

 cal Geography, Mineralogy, Natural History, 

 Astronomy, and Meteorology. 



Edilori: Jas. D. Dana. Edw. S. Dana and B. Silliman. 



Anociate Editors : Professors Asa Gray, J. P. Cookb, Jr., 

 and John Tbovbzipce, of Cambridge ; H. A. Newton and 

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

 sity of Pennsylvania, Phila. Subscription Price |6 ; 50 Cents 

 a Number. Address the Proprietors. 



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



THROUGH TRAINS Via. N.Y., N. H. 4 H. R. R. 



Between Boston and New York. 



FROM GRAND CENTRAL DEPOT. 

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

 " " '« 11.35 P.M., weekdays, with Through New 



Pullman Sleepers. 

 '• " " 10.30 P.M., Sundays. 



FROM DEPOT, FOOT OF SI MMER 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. 



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., HEXRY 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. BARNKS & CO., 



in & 113 William Street, New Vork. 



II. JVH. KAYNOPv. 



No. 25 Bond St. 



NEW YORK 



(Established 

 1859) 



FOR ALL 



Laboratory 



Manufacturing Purposes. 



Wholesale and Retail. 



Scrap Purchased 



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 M Science " are chiefly among those having few facilities 

 for purchasing goods, and are buyers of Fancy Artic'es, 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 A dvertising moderate. Small advertisements on this page 

 $50 a year (52 insertions). 



MEYROWITZ 



BROTHERS, 



OPTICIANS, 



297 Fourth Ave., N. Y. 



S. E. COR. 23D ST 



Trial Cases, Oj>thalmos 

 copes, A rtifical Eyes, Clinical 

 Thermometers, Microscopes, 

 Electric Batteries, etc. 



Special attention given to 

 prescriptions 0/ Oculists. 



N. B.-An Illustrated Catalogue will 



be sent free upon requesL 



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 to the Xatural 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 & Stavei.Y, Publishers, Nos. 237 v 

 Dock Street, Philadelphia, Pa. 



