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SCIEN 



A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES. 



PUBLISHED BY N. D. C. HODGES, 874 BROADWAY, NEW YORK. 



Tenth Year. 

 Vol. XIX. No. 489. 



JUNE 17, 1892. 



Single Copies, Ten Cents. 

 3.50 Per Tear, in Advance. 



Contents. 



Insects in Popular Dread in New 



Mexico. C. H. Tyler Townsend... 337 



Scientific Work in Canada, at the 

 Eleventh Annual Meeting of 

 THE Rotal Society of Canada, 

 Mat 30 to June 2 337 



Notes on Star Photogr.^pht. Romyn 



Hitchcock 339 



Glacial Phenomena in North-Eastern 



New York. D. S. Kelloyg 341 



Notks and News 341 



Current Notes on Anthropology. — 



Vni. Edited by D. G. Brinton... 342 



The Proper Motions of the Stars. W. 



H. S. Monck 343 



The Pbar-Tree Psylla. J. A. Lint- 



ner , 343 



The Technical Education of the Elec- 

 trical Engineer. Lhigald C. Jack- 

 son. ... : 844 



Letters to the Editor. 



How to Protect Inventions in For- 

 eign Countries. Edward 1'. Thomp- 

 son 348 



Among the Publishers 348 



Entered at the Post-Offlce of New York, N.Y., as 

 Second-Class Mail Matter. 



Part VI of Volume III now ready. 



A Treatise on 



Chemistry. 



By Sir H. E. Roscoe, F.R.S., and C. Schorlemmer, 

 F.R.S., Professor of Chemistry in the Victoria 

 Univorsitj', Owens College, Manchester. With 

 Illustrations. 8vo, Cloth, $3. 



The previously-published parts of this important 

 work are: Vol. X, Non-Metallic Elements, $5.00; Vol. 

 n, Metals, in two parts, $6.00; Vol. Ill, The Chemis- 

 try of the Hydrocarbons and their Derivatives, in 

 five parts, f22.00. The present issue (Part VI) con- 

 tinues the subject of Vol. Ill, 



" It is difficult to praise too highly the selection of 

 materials and their arrangement, or the wealth of 

 illustrations which explain and adorn the text."— 

 London Academy. 



For aale hy all booksellers; or tv ill be sent by mc 

 on receipt of price by the publishers. 



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Speech Reading and Articulation 

 Teaching. 



By A, MELVILLE BELL, 



Price, 35 Cents, 



Practical Instructions in the Art of Heading 

 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 

 lor the Deaf, Boston, Mass. — is, so far as known, the 

 first Treatise published on " Speech Reading,"] 



From JPrincipals of Institutions for the Deaf . 



" Admirable in its conciseness, clearness and free 

 dom from technicality." 

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'■ Full of exact and helpful observations." 

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 of gryat importance for the student of phonetics." 

 — Modern Language Notes. 



*^* The above vpork may be obtained, by 

 order, through any bookseller, or post-free 

 on receipt of price, from 



N. L). C. HODGES, 



874 BROADWAY, NEW YORK. 



SCIENCE 



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