348 



SCIENCE. 



[Vol. XIX. No 489 



LETIERS TO THE EDITOR. 



#*# Correspondents are requested to be as brief as possible. The writer's riam^ 

 is in all cases required as proof of good faith. 



The editor will be glad to publish any queries consonant with the character 

 of the journal. 



How to Protect Inventions in Foreign Countries. 



In my article on protecting inventions in foreign countries, the 

 matter quoted below sliould be amended, as indicated, by adding 

 tlie clause in italics. 



"The term, 17 years, of a United States patent is not shortened 

 by an application filed, within 7 months of the United States ap- 

 plication, in Belgium, France, Great Britain, Guatemala, Italy, 

 Netherlands, Norway, Portugal, Servia, Spain, Sweden, Switzer- 

 land, and Tunis, or within 6 months, in Brazil or San Domingo," 

 if the respective dates of the foreign patents are the same or later 

 than that of the United States patent. 



The error occurred through no fault of yours; but you would 

 greatly oblige me by entering the correction. 



Edward P. Thompson. 



New York, June 9. 



The current issue of The Weekly Bulletin of Newspaper and 

 Periodical Literature, published at 5 Somerset St., Boston, is 

 twice its usual size, containing a classified index of 1300 articles 

 from recent numbers of the periodical press. The Bulletin cata- 



logues the impotant articles in the leading daily and weekly pa- 

 pers and the monthly magazines of the United States and Canada, 

 including Science. Its value to readers, writers, and students, is 

 sufficiently indicated by its title, and, although stUl in its first 

 volume, its success as evidenced by the current issue is a surprise 

 to no one acquainted with its plan and purpose. 



— A State Academy of Science was established in Ohio last 

 December by a few of the workers in various departments, and 

 held its first field or summer meeting at Akron on the 3d and 4th 

 of June. Arrangements were made for its reception by the 

 Akron Scientific Club, and these were carried out to the evident 

 satisfaction of the members attending. Their number was, how- 

 ever, diminished by a heavy downpour of rain during the pre- 

 ceding night though on the two days of the meeting the weather 

 was fine. A small steamer was engaged for the day, and both 

 hosts and guests enjoyed together ample opportunities for study 

 and collection, in all departments, on the banks and in the waters 

 of several of the morainic lakes so numerous in the vicinity of 

 Akron. In the evening a reception was held at Buchtel College, 

 when short addresses of welcome were made by the mayor, the 

 president of the college and the president of the club, and were 

 suitably replied to by several of the visiting members. A short 

 business session and a microscopic exhibition by the students com- 

 pleted the programme. On Saturday the members went by an 

 early train to the Gorge of the Cuyahoga, where they spent the 



CALENDAR OF SOCIETIES. 



Chemical Society, Washington. 



May 12. — E. E. Ewell, The Carbohydrates 

 of the Coflfee- Berry ; G. L Spencer, An Im- 

 proved Extraction Flask and an apparatus 

 for Rapid Drying over Sulphuric Acid; K. 

 P. McElroy and W. D. Bigelow, Behavior 

 of Chromates in Acetone Solutions. Ad- 

 journment was until November. 



Biological Society, Washington. 



June 11. — C. Hart Merriatn, The Southern 

 Fur Seal (Arctocephalus) at Guadalupe 

 Island ; Frederick V. Coville, Uses of Plants 

 among the Panamint Indians; J. M. Hol- 

 zinger, On Amarantus crassipes Schlecten- 

 dal; C. Hart Merriam, The Death Valley 

 Expedition. 



Societas Entomologica. 



International Entomological Society, Zu- 



rich-Hottingen, Switzerland. 



Annual fee, ten francs. 



The Journal of the Society appears twice a 

 month, and consists entirely of original ar- 

 ticles on entomology, with a department for 

 advertisements. All members may use this 

 department free of cost for advertisements 

 relating to entomology. 



The Society consists of about 450 members 

 in all countries of the world. 



The new volume began April 1, 1893. The 

 numbers already issued will he sent to new 

 members. 



For information address Mr. Fritz Ruhl, 

 President of the Societas Entomologica, 

 Zurich-Hottingen, Switzerland. 



SCIENCE CLUBBING RATES. 



10^ DISCOUNT, 



We will allow the above discount to any 

 subscriber to Science who will send us an 

 order for periodicals exceeding $10, counting 

 each at its full price. 



N. D. C. HODGES, 874 Broadway, N. Y. 



Exchanges. 



[Freeof charge to all, if of satisfactory character. 

 Address N. D. C. Hodges, 874 Broadway, NewTork.l 



Taxidermist going out of business has quantity of 

 finely-mounted specimens of North American birds, 

 mammals and reptiles and skios of birds for sale, 

 including a full local collection of bird skins, show- 

 ing some great variations of species; also quantity 

 of skulls with horns of deer and mountain sheep, 

 and mounted heads of same. Will give good ex- 

 change for Hawk Eye camera with outfit. Apply 

 quickly to J. R. Thurston, 265 Yonge St., Toronto 

 Canada. 



For exchange. — A fine thirteen-keyed flute in leatbei 

 covered case, for a photograph camera suitable for mak- 

 ing lantern slides. Flute cost $27, and is nearly new 

 U. O. COX, Mankato, Minn. 



T© exchange ; Experiment Station bulletins ai 

 reports for bulletins and reports not in my file, 

 will send list of what I have for exchange. P. 

 ROLFS, Lake City, Florida. 



Finished specimens of all colors of Vermont marble for 

 fine fossils or crystals. Will be given only for valuable 

 specimens because of the cost of polishing. GEO. W. 

 PERRY, State Geologist, Rutland, Vt. 



For exchange. — Three copies of *' American State 

 Papers Bearing on Sunday Legislation," 1891, $2.50, new 

 and unused, for "'The Sabbath," by Harmon Kingsbury, 

 1840; "The Sabbath," by A. A. Phelps, 1842; " History 

 of the Institution of the Sabbath Day, Its Uses and 

 Abuses," by W. L. Fischer, 1859; " Humorous Phases of 

 2; or other works amou.iting 

 , on the question of govern- 

 i to religion, personal liberty, 

 sell ''American State Papers." 

 the subject. WILLIAM AD 



V, ' by Irving '. 

 3 value of books exchanj 

 lental legislation in refert 

 tc. If preferred. I will 

 nd buy-other books 



DISON BLAKELY, Chicago, III. 



For Sale or Exchange for books a complete private 

 chemical laboratory outfit. Includes large Becker bal- 

 ance (200g. to i-iomg.), platinum dishes and crucibles, 

 agate motors, glass-blowing apparatus, etc. For sale in 

 part or whole. Also complete file of Sillinian'' s yournal, 

 i862-:8S5 (62-71 bound); Smithsonian Reports, 1854-1883; 

 U. S. Coast Survey. 1854-1869. Full particulars to en- 

 quirers. F. GARDINER, JR., Pomfret, Conn. 



Wanted, in exchange for the following works, any 

 standard works on Surgery and on Diseases of Children: 

 WiIson's"American Ornithology," 3 vols.rCoues' "Birds 

 of the Northwest " and " Birds of the Colorado Valley," 

 2 vols.; Minot's "Land and Game Birds of New Eng- 

 land;" Samuels' " Our Northern and Eastern Birds;" a'll 

 the Reports on the Birds of the Pacific R. R. Survey, 

 bound in 2 vols., morocco; and a complete set of the 

 Reports of the Arkansas Geological Survey. Please give 

 editions and dates in corresponding. R. ELLSWORTH 

 CALL, High School, Des Moines, Iowa. 



To exchange Wright's " Ice Age in North America" 

 and Le Conte's "Elements of Geology" (Copyright 1882) 

 for "Dar\vinism," by A. R.Wallace. "Origin of Species." 

 by Darwin. "'Descent of Man." by Darwin, 'Man's 

 Place in Nature," Huxley, ^'Mental Evolution in Ani- 

 mals," by Romanes, ''Pre-Adamites," by Winchell. No 

 books wanted except latest editions, and books tn good 

 condition. C. S. Brown, Jr., Vanderbilt University. 

 Nashville, Tenn. 



Wants. 



A ny person seeking- a position for ivhick ke is quali- 

 fied by his scientific attainments, or any person seeking 

 some one to fill a position 0/ this character^ be it that 

 of a teacher 0/ science,, chemist^ draughtsman, or 'what 

 not, may have the ' Want ' inserted under this head 

 FREE OF COST, ij he satisfies the publisher of the suit- 

 able character of his application. A ny person seeking 

 information on any scientific question, the address of 

 auy scientific man,, or -who can in any 'way use this 

 column for a purpose consonant zvith the nature of 

 the paper,, is cordially invited to do so. 



WANTED.— We want any and sU of the following, 

 providing we can t tade other books and maga- 

 zines or buy them cheap for cash: Academy, Lon- 

 don, vol. 1 to 28, as, Jan. and Feb., '89; Age of Steel, 

 vol. 1 to 66; American Antiquarian, vol. 1, 2; Ameri- 

 can Architect, vol. 1 to 6, 9; American Art Review, 

 vol. 3; American Field, vol. 1 to 21; American Geol- 

 ogist, vol. 1 to 6; American Machinist, vol. 1 to 4; 

 Art Amateur, vol. 1 to 7, Ojt,, '4; Art Interchange, 

 vol 1 to 9; Art Union, vol. 1 to 4, Jan., '44. July, '45; 

 Bibliotbeca Sacra, vol. 1 to 46; Qodey's Lady's Book, 

 vol. 1 to 20; New Englaoder, vol.11; Zoologist, Series 

 1 and 1, Series 3 vol. 1 to 14; Allen Armendale {a. 

 novel). Raymer's "Old Book " Store, 243 4th Ave. 

 S., Minneapolis, Minn. 



WANTED.— By a young man, a Swarthmore Col- 

 lege junior, a position as principal of a public 

 high school in one of the Gulf States, or as instructor 

 in botany, physiology, and geology in an academy 

 or normal school. Address B., care of Librarian, 

 Swarthmore College, Penn. 



WANTED.— A teacher of Geology who is familiar 

 with the fossils of the Hamilton Group, as 

 instructor of Geology during July next at the Natu- 

 ral Science Camp on Canandaigua lake. Apply to 

 ALBERT L. AREY, Director, 229 Averill Ave., 

 Rochester, N. Y. 



WANTED.— To act as correspondent for one or 

 two daily or weekly papers. Have worked on 

 paper for about two years Would like a position on 

 editorial staff of humorous paper. Address GEO. 

 C. MASON, 14 Elm St.. Hartford, Conn. 



TRANSLATOR wanted to read German architec- 

 tural works at sight (no writing). One familiar 

 with technical terms desired. Address "A.," Box 

 149, New York Post Office. 



WANTED.— A position in a manufacturing estab- 

 lishment by a manufacturing Chemist of in- 

 ventive ability. Address M. W, B , care of Science, 

 874 Broadway, N. Y. 



WANTED.— Books on Anatomy and Hypnotism. 

 Will pay cash or give similar books in ex- 

 change. Also want medical battery and photo out- 

 fit. DR. ANDERSON, 182 State street, Chicago, III. 



WANTED. — A college graduate with some normal 

 training, to teach the sciences, at Sl.SOO per 

 year, in a Southern college. A Baptist or a Method- 

 ist preferred. Must also be a first-class Latin 

 scholar. A. H. Beals, Box K, Milledgeville, Ga. 



\ DDRESS WANTED.— Will some one please send 

 "A the address of the Secretary of the American 

 Philological Society. Also that of Herbert Spencer. 

 ADDISON," Room 84, 164 Madison St,, Chicago, lU. 



