96 



SCIENCE. 



[Vol. XX. No. 497 



fectious Diseases: Causation and Immunity," giving the facts 

 that have been established in this Beld up to date ; and ' A Further 

 Study of Involuntary Movements," by Professor Joseph Jastrow, 

 supplemeoting a previous paper on this subject, will appear. 



— Charles Scribner's Sons issued on Aug. 8 Stevenson's long- 

 expected book on Samoa, entitled "A Footnote to History," being a 

 narrative of the varied history of that island for the past eight years. 



— J. B. Lippincott Company's August Bulletin of New Publica- 

 tions contains, among other announcements, the following: "Pho- 

 tography : Its History, Processes, Apparatus, and Materials. Com- 

 prising Working Details of all the more Important Methods," by 

 A. Brothers. In the preparation of this work, the author's aim 

 has been to produce a Handbook for the Use of Students of Photog- 

 raphy, which should give the results of practical experience, and 

 include — as far as jDossible within a moderate compass — infor- 

 mation gathered from many sources, and not readily accessible. 

 The newer methods have been dealt with in sufBcient detail, and 

 special attention given to the processes in use prior to the intro- 

 duction of the gelatino-bromide method. Some of these processes 

 are in danger of being neglected through the facilities which the 

 newer methods have introduced. But, as Professor Brothers 

 demonstrates, the new processes do not give results equal to the 

 old, and are totally unsuitable forsome purposes — such as making 

 negatives for photo-lithography, and in various other ways. 

 Where practicable, the plates illustrate the processes described, 



thus making the work distinctly more serviceable to students. 

 " In Starry Realms : a New Work on Astronomy," by Robert S. 

 Ball; "Regional Anatomy in its Relation to Medicine and Sur- 

 gery," by George McClellan, M.D. ; "Steam Boilers: their De- 

 fects, Management, and Construction," by R. D. Monro. Of 

 books in press, " A Short Course on Zoology Designed for High 

 Schools and Academies," by C. De Montmahon and H. Beaure- 

 gard; translated and adapted for American schools by Wm. H. 

 Greene, M,D. "Recent Rambles, or in Touch with Nature," by 

 Charles C. Abbott, M.D. 



— Ginn & Co. have nearly ready "German Orthography and 

 Phonology," by George Hempl, Assistant Professor of English in 

 Michigan University. They will publish in the fall " Fourier's 

 Series, and Spherical, Cylindrical, and Ellipsoidal Harmonics," 

 with applications to problems in matheaiatical physics, by W. E. 

 Byerly. 



— Outing for August opens with the first instalment of Wheel- 

 man Frank G. Lenz's description of a cycling tour around the 

 world. The rider is at present somewhere on the broad western 

 plains, en route for the Pacific coast, and during his two-year 

 jaunt he will traverse Japan, China, India, Persia. Turkey, Aus- 

 tria, Germany, Holland, France, England, Scotland, and Ireland. 

 Mr. Lenz will communicate his expeiiences to Outing from con- 

 venient points of his journey, illustrating his articles by photo- 

 graphs taken by himself. The opening chapter describes the trip 



Publications Received at Editor's Office. 



Apgar, Austin C. Trees of the Norf.herD United 



States. New York, American Book Co. 18°. 



224 p. $1. 

 Arkansas Geol. Survey. Annual Report for 1890. 



Little Rock, Press Print. 8°. 474 p 

 Bean, Tarleton H. Notes on Fishes Collected in 



Mexico. Washington, Government. 8°. Paper. 



in. 



Benedict, James E, Corystoid Crabs of the Genera 

 Teimessus and Erimacrus. Washington, Gov- 

 ernment. 8°. Paper. lU. 



BoLLES, T. Dix. Chinese Relics in Alaska. Wash- 

 ington. Government. 8". Paper. 111. 



EiGENMANN, Carl H. The Pishes of San Diego. 

 Washington, Government. 8". Paper. 



Hoffman, B. B. The Sloyd System of Wood 

 Working. New York, American Book Co. IS''. 

 248 p. fl. 



Jefferson, Samuel. Columbus. An Epic Poem. 

 Chicago, S. C. Griggs & Co. 12°. 219 p. 



Linton, Edwin. Notes on Avian Entozoa. Wash- 

 ington, Government. 8°. Paper. III. 



Mason, Otis T. The Dlu, or Woman's Knife of 

 the Eskimo. Washington, Government. 8°. 

 Paper. 111. 



Bathburn, Mary J. Catalogue of Crabs of the 

 Family Periceridee Washington, Government. 

 8°. Paper. 



RicKOPF, Rebecca D. A Supplementary First 

 Reader. New York, American Book Co. 12°. 

 182 p. 85 cts. 



Shdfeldt. R. W. The Evolution of House Building 

 among the Navajo Indians. Washington, Gov- 

 ernment. &°. Paper. 111. 



Shufeldt, R. W. a Maid of Wolpai. Washington, 

 Government. 8°. Paper. 



Smith, John B. Revision of the Genus Cuculla, 

 etc. Washington, Government. 8°. Paper. 

 86 p. 



Stynegeb, Leonhard. Preliminary Description 

 of a new Genus and Species of Blind Cave 

 Salamander. Washington, Government. 8°. 

 Paper. 111. 



Styneger, Leonhard. Notes on a Collection of 

 Birds made in Japan. Washington, Govern- 

 ment. 8°. Paper. 



Williamson, Mrs. M. Burton. An Annotated List 

 of the Shells of San Pedro Bay. Washington, 

 Government. 8°. Paper. 111. 



INDEXES 



Volumes XVII. and XVIII. 



SCIENCE 



are in preparation, and will be 

 issued at an early date. 



Reading Matter Notices. 



Eipans Tabules : best liver tonic. 

 Ripans Tabules cure jaundice. 



Exchanges. 



[Freeof charge to all, if of satisfactory character. 

 Address N. D. C. Hodges, 874 Broadway, New York.] 



Taxidermist going out of business has quantity of 

 finely-mounted specimens of North American birds, 

 mammals and reptiles and skias 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. 



To exchange ; Experiment Station bulletins and 

 reports for bulletins and reports not in my file. I 

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

 ROLFS, Lake City, Florida. 



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

 covered case, for a photograph camera suitable for mak- 

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

 U. O. COX, Mankato, Minn. 



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. Fisher, 1859; " Humorous Phases of 

 the Law," by Irving Browne; or other works amounting 

 to value of books exchanged, on the question of govern- 

 mental legislation in reference to religion, personal liberty, 

 etc. If preferred, I will sell "American State Papers." 

 and buy other books on the subject. WILLIAM AD- 

 DISON BLAKELY, Chicago, 111. 



For Sale or Exchange for books a complete private 

 chemical laboratory outfit. Includes large Becker bal- 

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

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

 part or whole. Also complete file of Silli7nan' s yoiirnal^ 

 1862-1885 (62-71 boundV, 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: 

 Wilson's " American Ornithology,'" 3 vols.; Coues' ''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;" all 

 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. 



Wants. 



A ?iy person seeking a position for ivhich ke is guali- 

 fi-ed by his scientific attainvten^s^ or any person seeking 

 some one to fi.ll a position 0/ tkis character^ be it thai 

 0/ a teacher ofi science.^ chemist., draughtsman^ or ivkai 

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

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

 able char icter of his application. A ny person seeking 

 information on any scientific question., the address of 

 auy scientific tnan^or "who can in any -way use this 

 column for a purpose consonant with the nature oj 

 the paper., is cordial'y invited to do so. 



CHEMIST AND ENGINEER, graduate German 

 Polytechnic, Organic and Analytical, desires a 

 position in laboratory or chemical works. Address. 

 yi3J^ E. 7th Street, New York, care Levy. 



A MAN, 36 years old, of extensive experience, hav- 

 ing the degrees of A.M. and Ph.D., desires a 

 first-class opening as a teacher of Zoology and 

 kindred studies in a college or university. Can 

 furnish numerous testimonials or references as to 

 success and skill in most modern laboratory 

 methods. Address E. W. D., Md. Agr. College, 

 College Park, Md. 



A YOUNG MAN, with a thorough training in Ana- 

 lytical Chemistry (including analysis of miner- 

 als, food, water, etc.), and holding a diploma of the 

 School of Practical Science, of Toronto, and good tes- 

 timonials, desirfes a position as Analytical Chemist 

 or as assistant to such. Address to WM. LAWSON, 

 16 Washington Ave., Toronto, Ontario. 



A JO HNS HOPKINS graduate (1892) desires a^ 

 position as instructor in mathematics and 

 physics. Address A. B. TURNER, Johns Hopkins 

 University, Baltimore, Md. 



WANTED.— A collection of postage stamps; one 

 made previous to 1870 preferred. Also old and 

 curious stamps on original letters, and old entire 

 V S. stamped envelopes. Will pay j ash or give in 

 exchange firsfc-class fossils, including fine crinoids. 

 WM. F. E. GURLEY, Danville, III. 



WANTED.— To purchase laboratory outfit; bal- 

 a'aces, evaporating dishes, burettes, etc., 

 wanted immediately for cash. C. E. SPEIRS, 23 

 Murray street, New York. P. O. Box 1741. 



WANTED.— The services of a wide-awake young 

 man. as correspondent, in a large manuf'actur 

 ing optical business; one preferred who has a thor- 

 ough knowledge of microscopy and some knowledge 

 of photography. Address by letter, stating age and 

 references. Optical, care of Science, 874 Broadway, 

 New York. 



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.— 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. 



