May 29, 1891.] 



SCIENCE. 



307 



letter press, illustrated by fourteen full-page lithographic plates. 

 Part 3, which will contain illustrated descriptions of the verte- 

 brates of the Laramie formation of the North-west Territory, by 

 the same author, is now in course of preparation. 



— The American Society for the Extension of University Teach- 

 ing wiU shortly issue the first number of University Extension, a 

 journal devoted to the interests of the movement for popular edu- 

 cation known as university extension, which has feiken such a 

 strong root in this country at many centres. The periodical will 

 serve as the organ of the society, and will constitute a general 

 depository of information relating to the subject, and will be de- 

 voted to arousing and sustaining a public interest in all that pertains 

 to this branch of popular education. All communications should 

 be addressed to the society, 1603 Chestnut Street, Philadelphia. 



— John Burroughs's " Talk about Wild Flowers," in St. Nicho- 

 las for June, will show botanists how to make theu- science " un- 



derstanded of the people," and may also suggest to them a few- 

 particulars upon which fuller information is desirable. 



— The eyes of travellers and pleasure-seekers who are weary of 

 the beaten paths are just now turned towards Alaska, which is 

 said to possess some of the most marvellous scenery in the world. 

 An article describing a trip to Alaska and the beauties of its 

 mountains and valleys is contributed to Lippineott's Magazine for 

 June, by Grace Peckham, M.D. 



— The " Third Biennial Report of the California State Board of 

 Forestry" contains a monograph, with thirty illustrations, of the 

 cone-bearing trees of the north-west, including California. Persons 

 desiring corrected copies can obtain them by sending 10 cents per 

 copy (to cover expense of wrapping, postage, etc.) to J. G. Lem- 

 mon,* botanist of the board, 1015 Clay Street, Oakland, Cal. A 

 few copies remain of the previous report describing the " Pines of 

 the Pacific Slope," with twenty-four illustrations. 



Exhaustion 



The phosphates of the system 

 are consumed with every effort, 

 and exhaustion usually indicates 

 a lack of supply. The Acid 

 Phosphate supplies the phos- 

 phates, thereby relieving exhaus- 

 tion, and increasing the capacity 

 for labor. Pleasant to the taste. 



Dr. A. N. Krout, Van Wert, 0., says: 

 ' ' Decidedly beneficial in nervous exhaus- 

 tion." 



Dr. S. T. Newman, St. Louis, Mo., says: 

 ' ' A remedy of great service in many 

 forms of exhaustion." 



Descriptive pamphlet free. 



Rumford Chemical Works, Providence, R. I. 



Bevrare of Substitutes and Imitations. 



CAUTION,— Be sure tlie word "Hors- 

 ford's" Is printed on tlxelabeJ. All others 

 are spnrioos. Never sold in bulk. 



POPULAR MANUAL OF VISIBLE SPEECH AND 

 VOCAL PHYSIOLOGY. 



For use in Colleges and Normal Schools. Price 50 cents 



Sent free by post by 



IV. O. C. H0I>0E:S, 47 tafayette PI., N. Y. 



PRIZE ESSAYS OF THE AMERICAN PUBLIC 

 HEALTH ASSOCIATION. 



Practical Sanitary and Economic Cooking Adapt- 

 ed to Persons of Moderate and Small Means. By 

 Mrs. Mary Hinman Abel. 12mo, 182 pp. Cloth, 

 ■10 cents. 



No. 1. Healthy Homes and Foods for the Work- 

 ing-Classes. By Professor C. Vaughan, M.D. 

 Ann Arbor, Mich. 8to, 62 pp. Paper, 10 cents. 



No. 2. The Sanitary Conditions and Necessities of 

 School-Houses and School-Life. By D. F. Lin- 

 coln, M.D., Boston, Mass. 8vo, 38 pp. 5 cents. 



No. 3. Disinfection and Individual Prophylaxis 

 against Infectious Diseases. By Greorge M. 

 Sternberg, M.D., Major and Surgeon U.S.A. Bvo, 

 40 pp. Paper, 5 cents. 



No. 4. The Preventable Causes of Disease, Injury, 

 and Death in American Manufactories and 

 Workshops, and the Best Means and Appliances 

 for Preventing and Avoiding Them. By George 

 H. Ireland, Springfield, Mass. 8vo, 20 pp. Paper, 

 5 cents. 

 The four essays (Nos. 1, 2, 3, 4) iu one volume of 



nearly two hundred large octavo pages, thoroughly 



indexed. Cloth, 50 cents. 



N. D. C. HODGES, 47 Lafayette Place, New York. 



IJ!U:I:1J--IJJJI.II1=I=U.J 



X(>7 PARK PMEE, NEW YORK^ 



Old and Rare Books. 



) ACK NUMBERS and complete sets of leading Mag- 

 J azines. Rates low. AM. MAG. EXCHANGE, 

 Schoharie N V 



Speecb Reading and Articulation 

 Teaching. 



By A, MELVILLE BELL. 



Price, 35 Cents. 



Practical Instructions in the Art of Reading 

 Speech from the Mouth; and in the Art of 

 Teaching" Articulation to the Deaf. 

 [This Work — written at the suggestion of Miss 

 Sarah Fuller, Principal of the Horace Mann School 

 for the Deaf, Boston, Mass, — is, so far as known, the 

 first Treatise published on " Speech Reading."] 

 From Princijyals of Institutions for the Deaf, 

 " Admirable in its conciseness, clearness and free- 

 dom from technicality." 

 " The simplicity and perfection of this little book. 



" Full of exact and helpful observations.^' 

 "A very interesting and valuable work." 

 " The rules are clearly given and will be of great 

 utility." 

 " Every articulation teacher should study it." 

 *'A model of clearness and simplicity, without 

 having any of the puzzling symbols that trouble the 

 common mind. . . . The exercises given in speech- 

 reading from the lips are especially Interesting, and 

 of great importance for the student of phonetics.'" 

 — Modern Language Notes. 



%^ The above work may be obtained, by 

 order, through any bookseller, or post-free 

 on receipt of price, from 



N. D. C. HODGES, 



47 Lafayette Place, New York. 



AMERICAN HERO-MYTHS. 



A Study In tlie Native Religions of tbe 

 Western Continent. 



By D, G, Beinton, M,D, 8°, S1.75, 



THE CRADLE OF THE SEMITES. 



By D, G, Brinton, M.D,, and Morris Jastrow, Jr, 

 Ph.D. 8°, 30 cents, 



N. D. C. HODGES, 47 Lafayette Pl„ New York. 



DO YOU INTEND TO BUILD? 



If you intend to build, it will be a mistake not to send for ''SENSIBI.E LOW-COST 



HOtJSESj" uow arranged in three volumes. In them you will find perspective views, 

 floor plans, descriptions, and estimates of cost for 105 tasteful, ne'iv designs for 

 lionses. They also give prices for complete Working Plans, Details, and Specifications, 

 which enable you to build Trithont delays, mistakes or quarrels with your build- 

 er, and which any one can understand. Vol. I. contains 35 copyrighted designs of 

 houses, costing between £500 and $1S00. Vol. II. contains 35 copvrighted designs. $1800 to 

 g3000. Vol. III. contains 35 copyrighted designs, §3000 to $9000. Price, by mail, $1.0O 

 eacb, or $3.00 for ilie set. 



"COLONIAL HOUSES," a volume showing Perspectives and Floor Plans of 

 houses arranged in the inimitable style of the Colonial Architecture, and having all modem 

 arrangements for comfort. Price, $2.00. 



"PICXIIRESQLE HOUSES FOR FOREST AND SHORE":— This shows 

 Perspectives and Floor Plans of new designs for Summer Cottages, which are romantic* 

 convenient, and cheap. Price, $1.00, by mail. 



N. D. C. HODGES, 47 Lafayette Place, New York. 



