450 



SCIENCE. 



[Vol. XIII. No. 331 



whereby they can supply a copy by mail to any one who will write 

 to them, enclosing twenty-five cents in stamps or post-office order. 

 This is a chance seldom offered, and all lovers of art should avail 

 themselves of it. Mention this paper, and address Scott & Bowne, 

 132 and 134 South Fifth Avenue, New York. 

 Magnesium Flash-Lamp. 

 A lamp for burning pure magnesium has been invented by Mr. 

 E. M. Pine, one of the most successful of amateur photographers, 

 whose flash-light photos were awarded the first prize at the Pitts- 

 burgh exhibition in 1888. Recognizing the danger attending the 

 use of the various explosive compounds heretofore used for illumi- 

 nating, Mr. Pine has succeeded in inventing a lamp for burning 



pure magnesium, as shown in the accompanying illustration, after 

 much experimenting, and believes his lamp, for brilliancy, rapidity, 

 and simplicity, as has been pronounced by professional photographers 

 who have tested if, to be a most complete flash-lamp. Its construc- 

 tion is said to insure perfect combustion ; and, as magnesium is 

 non-explosive, absolute safety is assured. The lamp is so portable 

 that it can be easily carried in the pocket, weighing about four 

 ounces. 



Paris Exposition and International Congress of Electricians. 

 James W. Queen & Co., Philadelphia, call the attention of col- 

 lege professors and others interested in scientific work, who are 

 intending to visit the Paris Exposition this summer, to the follow- 

 ing facts. They have most excellent representatives in Paris who 



have had the experience of many years in the selection and pur- 

 chasing of scientific apparatus of every description for college use. 

 In consequence of this, it has occurred to them that it might be a 

 convenience to their patrons when in Paris to be supplied with 

 letters of introduction to these agents. ■ 



By means of such letters, those professors who intend purchas- 

 ing apparatus will have the assistance of competent persons, who 

 are well acquainted with all the prominent makers, their apparatus, 

 and prices. Thus much valuable time may be saved that might 

 otherwise be spent in hunting up dealers and making bargains 

 with them, — a rather unsatisfactory operation, especially to those 

 not thoroughly conversant with the French language. Further- 

 more, it is often a great inconvenience and annoyance, after appa- 

 ratus may have been purchased satisfactorily, to attend to the 

 details of shipping and passing through the United States Custom- 

 House " free of duty." James W. Queen & Co. will be pleased to 

 relieve purchasers entirely of all this care, so that they need have 

 nothing to do but select the apparatus. 



Another advantage of this arrangement is, that there need be no 

 expenditure on the part of colleges at the time of ordering appa- 

 ratus. Apparatus ordered through these agents will be forwarded 

 in the firm's weekly shipments as soon as a few pieces are ready, 

 thus saving much time. 



Those among the electrical fraternity who expect to attend the 

 International Congress of Electricians will please note that they as 

 well as college professors will find it to their advantage to advise 

 with the firm's agents before buying apparatus for their companies 

 or for themselves personally. Messrs. Queen & Co. do not wish 

 professors or electricians, if they avail themselves of the offer of 

 letters of introduction, to feel under obligations to purchase any 

 thing. They will also be pleased to furnish letters to their agents 

 in England, Germany, and Switzerland, if desired. 



ONE LANGUAGE FOR THE WHOLE WORLD. 



WORLD-ENGLISH : 



THE UNIVERSAL LANGUAGE. 25 CENTS. 



Every one has heard of the butcher who, after a long 

 search for his knife, at last found it in his mouth : so 

 speakers of English have been seeking for a universal 

 language, when, lo ! it is in their mouths. The intelligi- 

 bility of English words has been obscured by a dense 

 mist of letters. This is now dispersed by A. Melville 

 Bell, who has already won a world-wide reputation 

 through his invention of " Visible Speech," the great 

 boon to deaf-mutes. Professor Bell calls this new discov- 

 ery ofhis "World-English," and the result is a language 

 which cannot fail to meet with acceptance, and at once 

 supersede the supposed necessity for " Volapiik," or any 

 other artificial language. No language could be invented 

 for international use that would surpass English in gram- 

 matical simplicity, and in general fitness to become the 

 tongue of the world. It is already the mother-tongue of 

 increasing millions in both hemispheres, and some knowl- 

 edge of the language is demanded by all educated popula- 

 tions on the globe. Social and commercial necessities 

 require that the acquisition of this knowledge shall be 

 facilitated, and it is believed that Professor Bell's inven- 

 tion has removed the last impediment to English becom- 

 ing the universal language, for which vague desires have 

 long been entertained, although hitherto only futile ef- 

 forts have been made. 



Ex-President Andrew D. White, of Cornell University, 

 says : " I believe that the highest interests of Christian 

 civilization and of humanity would be served by its 

 adoption. China and Japan would be made English- 

 speaking peoples within fifty years, and so brought with 

 in the range of Christianizing and civilizing ideas, in th^ 

 largest sense. All existing missionary work is trivial a 

 compared with this. Foryour system would throw widi 

 ast countries, as, indeed, all the countries o 

 ) the whole current of English and American 



Open tho 

 the world, t 

 thought." 



For Biliislon ot Englisl tlroiglioit tie Worll 



AS 



THE UNIVERSAL LANGUAGE 



This " Hand-Book of World-English " is the Complete, Simple, 

 and Efficient Medium. 



FOREIGNERS 



Will Acquire, by Means of this Hand-Book, a 

 PERFECT PRONUNCIATION OF ENGLISH. 



For Priiiry Sclool PudiIs aid Illiterate Adults 



World-English is a Royal Road to Reading. 



To Teaclers ol Engllsli ami Modern Lanpages 



This Hand-Book will be of Primary Importance 

 as a Phonetic Directory. 



DEFECTS OF SPEECH 



Will be Readily Corrected by Means of the Artlcula- 

 tive Directions in this Hand-Boob. 



HAND-BOOK OF WORLD-ENGLISH, 



25 CENTS. 

 The plan of this little book is altogether new. Letters 

 and sounds are so associated, in all the exercises, that from, 

 the mere knowledge of letters a learner cannot fail to 

 pronounce words with certainty. English reading will 

 thus be easily acquired, whether by natives or foreigners, 

 children or adults. 



The general resemblance of World-English to Literary 

 English is such that any reader of the latter deciphers 

 the former at sight, or, at most, after a few minutes' 

 study of the new letters. A like result may be antici- 

 pated for those who shall learn to read from World-Eng- 

 lish. They will transfer their power of reading to the 

 literary form of the language, almost without effort. The 

 orthographic aspect of words will, besides, be so fixed in 

 the eye, by contrast, that spelling will be remembered as 

 — what it really is — a pictorial association with words. 



No special training is required to qualify teachers for 

 using this book. The subject can even be successfully in- 

 troduced in the kindergarten and the nursery. This 

 phonetic mode of initiation in reading cannot be too 

 strongly urged on the attention of School Boards on both 

 sides of the Atlantic. 



The ordinary orthography of each word is interlined 

 with the World-English version throughout the Exer-- 

 cises and Readings . 



So set down, our tongue is the best for the world to 

 unite upon. — Brooklyn Ea^le. 



The idea of Mr. Bell has much to : 

 the presentation is charmingly clear.— 



The result is a language which cannot fail to meet with 

 acceptance. — Boston Traveller. 



Has the merit of great ingenuity. — Rail-way Age, 



His treatise, as a study of English orthoepy, condenses 

 the result of much thought and experience in small com- 

 pass. — The Critic. 



World-English deserves the careful consideration of all 

 serious scholars. — Modern Language Notes. 



World-English i; the English language unburdened of 

 its chaotic spelling. — Popular Science Monthly. 



We commend it to the attention of teachers. — Ottawa 

 Globe. 



, Phila. 



" World- English^* and *^ Hand-Book of World-E?ig 



' can be had of all booksellers, or will be sent for 50 cents, post free, by the publisher. 



Int. id. O- HOnDO-ES, 4zT Laf a;5re-t-be IPlaoe, DSTe^j?^ ^X'ox'ns:, 



