August 4, 1893.] 



SCIENCE. 



69 



gled with the true Mongoloid Malays throughout the Oceanic do- 

 main (Indian and Pacific Oceans). But ray object here is merely 

 to establish my priority claim for the American readers of Science, 

 who are referred to the above quoted monograph for the detailed 

 treatment of these interesting questions. A. H. Keane. 



79 Broadhurat Gardens, South Hampstead, N. W., July 21. 



Sound and Color. 



Without in the least doubting the accuracy of Dr. Wallian's 

 curious observations respecting the appearance of color about the 

 heads of public speakers, I would just suggest the possibility of 

 another explanation. 



I have myself frequently observed, when listening to various 

 preachers, a patch of rich blue color near to the head of the 

 speaker. I have always attributed this, however, to the well- 

 known effect ujjon the retina of fatigue from the continued im- 

 pression of one color giving rise to a phantasm of the complemen- 

 tary color. The face of a speaker is some tint of flesh color. The 

 eye of the listener is fixed upon the face, and in a short time the 

 complementary phantasm makes its appearance, always some tint 

 of blue or purple, according to the complexion of the speaker. 



This will not. of course, explain all the phenomena mentioned 

 by Professor Underwood and Dr. Wallian, but it is a factor which 

 should not be forgotten in discussing the subject. 



F. T. MOTT. 

 Leicester, England. 



BOOK-REVIEWS. 



A Biographical Index of British and Irish Botanists. By James 



Britten and G S. Bodlger. London, West, Newman & 



Co., 1893. 303 p. 



Messrs. Britten and Boulger have republished in book form their 



"Index of British and Irish Botanists" The matter originally 



appeared in the Journal of Botany from 1888 until 1891, but in 



203 pages of the reprint a large amount of additional material is 



given. This is shown by the fact that 1,825 names are given in 

 the volume, against 1,619 given in the Journal of Botany. In a 

 succinct form and by means of a series of readily understood ab- 

 breviations there are given the dates of birth and of death, place 

 of birth and death, place of burial, indication of social position 

 or occupation, university degrees or titles or offices held, and 

 dates of election to the Linnasau and Royal societies. Mention is 

 also made of the whereabouts of any correspondence or MSS. and 

 the existence of any herbarium or plants collected. Various bi- 

 ographical dictionaries, where further information may be ob- 

 tained, are also referred to. Any portrait, original or engraved, 

 and any genus, or, failing this, any species, dedicated to the per- 

 son, is mentioned. From this it will be seen that a large amount 

 of information is gathered within a small compass, and the vol- 

 ume will be of great assistance in looking up facts relative to any 

 one of the 1,835 names included within its pages. 



Joseph F. James. 



Washington, D. C, July 23. 



AMONG THE PUBLISHERS. 



Hann & Adair, Columbus, O., announce "A History of the 

 German Language from the Earliest Times to the Present Day," 

 by Chas. W. Super, president of the Ohio University at Athens. 

 The purpose of the author has been to write a book that may be 

 read with interest and profit by persons whose knowledge of Ger- 

 man does not extend beyond the rudiments. It has been his aim 

 to make duly prominent the common origin of the English and 

 German languages and to use many facts of the former to eluci- 

 date those of the latter, so far as it can be done within the space 

 at command. The book also discusses incidentally some pheno- 

 mena common to all civilized tongues. By the same author is 

 "Weil's Order of Words in the Ancient Languages Compared 

 with that of the Modern Languages," published by Ginn & Co., 

 Boston, Mass. 



Delicious 



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Allays the thirst, aids diges- 

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Descriptive pamphlet free. 

 Rumford Chemical Works, Providence, R. 1. 



Beware of Substitutes and Imitations. 



Exchanges. 



[Freeof charge to all, if ofsatisfactory character 

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



Wanted to exchange. — Medical books, Obstetri' 

 cal Transactions, London, Works of Sir J. Y- 

 Sirapson, Becky's Medical Jurisprudence. Hand 

 book for the Physiological Laboratory, by Eurnton, 

 Foster, Klein and Sanderson, Quain''s Anatoray, 

 and about fifty others. Catalogues ^iven. Want 

 Geological, Botanical and Microscopical books in 

 exchange. Dr. A. M. Edwards, 11 Washington St., 

 Newark, N. J. 



A complete set of Bulletins of U. S. Geological 

 Survey, various reports and bulletins of surveys of 

 Missouri, Arkansas, Minnesota, Alabama, Illinois, 

 New York, Pennsylvania, Indiana, Ohio and Texas; 

 iron ores of Minnesota ; Wailes' Agriculture and 

 Geology of Mississippi (rare). To exchange for peri- 

 odicals and books on Entomology or for Lepidoptera. 

 Rev. John Davis, the Deanery, Little Rock, Ark. 



For sale or exchange. — A complete set of the re- 

 port of the last Geological Survey of Wisconsin, 

 T. C. Chamberlin, geologist. It consists of four 

 large volumes, finely illustrated, and upwards of 

 forty large maps and charts. Will sell for cash or 

 exchange for a microscope. Address Geo. Beck, 

 Platteville, Wis. 



For sale or exchange for copper coins or rare 

 postage stamps. Tryon's American Marine Conch- 

 ology, containing hand colored figures of all the 

 shells of the Atlantic coast of the United States. 

 Presentation copy, autograph, etc. One vol., half 

 morocco, 8vo, usual price, %2'-\ postpaid, Sl5- Botany 

 of the Fortieth Parallel of the Hundredth Meridian 

 of the Pacific R. R. Sui-vey. Other Botanical works 

 and works on Ethnology. F. A. Hassler, M.D., 

 Santa Ana, Cal. 



I have a fire-proof safe, weight 1,150 pounds, 

 which I will sell cheap or exchange for a gasoline 

 engine or some other things that may happen to 

 suit. The safe is nearly new, used a short time 

 only. Make offers. A. Lagerstrom, Cannon Falls, 

 Minn., Bos 857. 



For exchange.— Hudson River fossils in good con- 

 dition from the vicinity of Moore's Hill, Ind., also 

 land and fresh water shells. Desire fossils and 

 shells from other groups and localities. Address 

 Geo. C. Hubbara, Moore's Hill. Ind. 



1 wish to exchange a collection of 7,000 shells, 

 1001 species and varieties, American and foreign, 

 land,nuviatile and marine, for a good microscope 

 and accessories. Address, with particulars, Dr. 

 Lorenzo G. Yates, Santa Barbara, California. 



Wants. 



w 



ANTRD— Panorpidae, Myrmeleoninae, and lit- 

 erature on the same. Chas. C. Adams, Bloom- 



ington, III. 



WANTED.— Assistant in Nautical Almanac ofBoe, 

 Navy Department. The Civil Service Commis- 

 sion will hold an examination on August 15 to fill a 

 vacancy in the position of assistant Ccomputer) in 

 the Nautical Almanac office. The subjects will be 

 letter-writing, penmanship, trigonometry, rudi- 

 ments of analytical geometry and calculus, 

 logarithms, theory and practice of computations, 

 and astronomy. Each applicant must provide him- 

 self witb a flve-plaoe logarithmic table. The ex- 

 amination will be held in Washington, and if appli- 

 cations are filed in season, arrangements may be 

 made for examinations in the large cities. Blanks 

 will be furnished upon application to the Commis- 

 sion at Washington. 



DRAFTSMEN WANTED.— The Civil Service Com- 

 mission will hold examinations on August 15 to 

 All two vacancies in the War Department; one in 

 the position of architectural draftsman, salary 

 $1,400, the other in the position of assistant drafts- 

 man. Quartermaster General's ofBce, salary $1,200. 

 The subjects of the architectural draftsman exami- 

 nation are letter-writing, designing specifications 

 and mensuration, and knowledge of materials; of 

 the assistant draftsman examination they are 

 letter-writing, tracing, topographic drawing and 

 projections. The examination will be held in 

 Washington, and if applications are filed ia season, 

 arrangements may be made for examinations in the 

 large cities. Blanks will be furnished upon appli- 

 cation to the Commission at Washington. 



A YOUNG man who has been through the course 

 in mathematics in Princeton University, 

 wishes some tutoring this summer. Rates reason- 

 able. Address P. H. Westcott, Cramer's Hill, Cam- 

 den Co., N.J. 



A GRADUATE of an American Polytechnic insti- 

 tution and of a German university (Gottingen), 

 seeks a position to teach chemistry in a college or 

 similar institution. Five years' experience in 

 teaching chemistry, Address Chemist, 757 Cary St. , 

 Brockton, Mass. 



AN experienced teacher in general biology wishes 

 a position in a first-class college or university. 

 Three years in nost-graduate study. Extensive 

 experience. St4p^ indorsements. Address E. W. 



Doran, Ph.D., 



f St., N. W., Washington, D. C. 



