SCIENCE. 



[Vol. XVIII. No. 454 



CALENDAR OF SOCIETIES. 

 Philosophical Society, Washington. 

 Oct. 18. — Cleveland Abbe, Meteorology in 

 Europe and America; G. E. Curtis, The 

 Rain-Making Experiments in Texas; F. W. 

 Clarke, On the Gem Localities of Maine 

 (with exhibition of specimens). 



Wants, 



A 7iy person seeking a position /or 'which he is qziali' 

 fied by his scientific attainvientsy or any person seeking 

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

 0/ a teacher of science.^ chemist^ draugkis?nan, or what 

 not, rnay have the ' Want"" inserted under this head 

 FREE OF COST, if he Satisfies the Publisher of the suit- 

 able character of his application. Any person seeking 

 in/onnation on any scientific question^ the address oj 

 any scientific inan^ or -who can in any way use this col" 

 ujnn for a purpose consonant 'with the nature of the 

 paper ^ is cordially invited to do so. 



WANTED.^ By a young man (27), B. A. and Ph.D., 

 with three years' experience as assistant in 

 chemistry, position as instructor in chemistry or in 

 natural sciences in college or academy, or other ad- 

 vantageous position as chemist. Give particulars 

 as to -work, salary, etc. F, W. MAR, L. Box 23, West 

 Haven, Conn. 



A YOUNG MAN with an M.S. degree from Cornell 

 University desires a position as Professor or 

 Instructor in Physics or Electrical Ensineering. 

 Address M. V. F., care Science, 47 Lafayette Place, 

 New York. 



WANTED— A position as Professor of Science by 

 a teacher of experience who has taken a post- 

 graduate course in biology. Address BOTANIST, 

 care Science, 47 Lafayette Place, New York. 



WANTED — A position in a college to teach Geol- 

 ogy, Mineralogy, and Physical Geography by 

 a graduate of a scientific institution and a teacher 

 of experience. Address Box 13, Nantasket, Mass. 



WANTED, Geological Reports of State of New 

 Jersey from 1868 on, except 1880 and 1881. D. T. 

 Marshall, Metuchen, N.J. 



WANTED— A position at a University as Lecturer 

 on Physical Geography or kindred subjects, by 

 a graduate from abroad. First-class references. For 

 particulars address F. A. V., care Science. 



WANTED a position as professor of geology or 

 metallurgy by a school of mines graduate. Ad- 

 dress T. "W. O., 49th Street and Madison Avenue, 

 New York City. 



Exchanges. 



[Free of charge to all, if of satisfactory character. 

 Address N. D. C. Hodges, 47 Lafayette Place, New 

 York.l 



For Sale or Exchange for books a complete private 

 chemical laboratory outfit. Includes large Becker bal- 

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

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

 part or whole. Also complete file of Silliman's Journal, 

 1862-1885 (62-71 bound); Smithsonian Reports, i854-i883;_ 

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

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



I have five vols, of "Olhausen's Biblical Commentary 

 on the New Testament " that I would like to sell or 

 exchange for works on geology of North America. 



These volumes are as good as new, except the slight 

 fading of the black cloth covers. D. T. Marshall, Me- 

 tuchen, N. J. 



For sale or exchange, extra fine pair ( 5 and ? ) of skins 

 of Rocky Mountain Goat, with the skulls, etc., as needed 

 for mounting; collection of vertebrate fossils from the 

 Coup Fork Tertiary of Kansas; collection of works on 

 descriptive cryptogamic botany — mostly on Fungi; thir- 

 teen vols, of Botanical Gazette^ eight vols. Qrevillea^ 

 four vols. Noiarisea; stereopiicon outfit, with attach- 

 ment for microscopic projection ; 148 stereopticon slides, 

 illustrating zoology and cryptogams. Wanted— American 

 and foreign works and pamphlets on Vertebrate Palaeon- 

 tology, and series of A jn. Jour, of Science and other peri- 

 odicals containing contributions to Vertebrate Palseon- 

 tology. Prof. F. W. Cragin, Colorado Springs, Colo. 



For exchange or sale at a sacrifice, an elaborate micro- 

 scope outfit. Bullock stand; monocular objectives, one- 

 sixth homeogeneous immersion, four-tenths, and three 

 inch, Bausch & Lomb, also one-fourth and one inch 

 Spencer. Four eye-pieces. Objectives are the best made. 

 Address Mrs. Marion Smith, 41 Branch Street, Lowell, 



To be published in October, 



THE LABRADOR COAST. 



A JOURNAL OF TWO SUMMER CRUISES 



TO THAT REGION. 



WITH NOTES ON ITS EAELY DISCOV- 

 ERY, ON THE ESKIMO, ON ITS PHY 

 SICAL GEOGRAPHY, GEOLOGY AND 

 NATURAL HISTORY, TOGETHER WITH 

 A BIBLIOGRAPHY OP WORKS, ARTI- 

 CLES, AND CHARTS RELATING TO 

 THE CIVIL AND NATURAL HISTORY 

 OF THE LABRADOR PENINSULA. 



By ALPHEUS SPRING PACKARD, M.D., P11.D, 



Sportsmen and ornithologists will be interested in 

 the list of Labrador birds by Mr. L. W. Turner, 

 which has been kindly revised and brought down to 

 date by Dr. J. A. Allen. Dr. S. H. Scudder has con- 

 tributed the list of butterflies, and Prof. John 

 Macoun, of Ottawa, Canada, has prepared the list of 

 Labrador plants. 



Much pains has been taken to render the bibliog 

 raphy complete, and the author is indebted to Dr 

 Franz Boas and others for several titles and impor 

 tant suggestions; and it is hoped that this feature of 

 the book will recommend it to collectors of Ameri 

 cana. 



It is hoped that the volume will serve as a guide 

 to the Labrador coast for the use of travellers, 

 yachtsmen, sportsmen, artists, and naturalists, as 

 well as those interested in geographical and histori 

 cal studies. 



N. D. C. HODGES, Publisher, 



47 Lafayette Place, New York. 



NEO-DARWIIiISM AND NEO-LAMARCKISM. 



By LESTER F. W^ARD, 



Annual address of the President of the Biological 

 Society of Washington delivered Jan. 24, 1891. A 

 historical and critical review of modern scientific 

 thought relative to heredity, and especially to the 

 problem of the transmission of acquired characters. 

 The following are the several heads involved in the 

 discussion Status of the Problem. Lamarckism. 

 Darwinism. Acquired Characters, Theories of He- 

 redity, Views of Mr. Galton, Teachings of Professor 

 Weismann, A Critique of Weismann, ^Neo-Darwin- 

 ism, Neo-Lamarckism, the American "School,''"' Ap- 

 plication to the Human Race. In so far as views 

 are expressed they are in the main in lino with the 

 general current of American thought, and opposed 

 to the extreme doctrine of the non-transmissibility 

 of acquired characters. 



Price, postpaid, 25 cents. 



N. D. C. HODGES, 47 Lafayette Place, N, Y. 



SLIDE-RULE 



PERPETUAL CALENDAR 



This Novel application of the Slide-Rule principle 

 shows, in an instant, without study or calculation, 

 a complete Calendar for any month in any year, old 

 style and new, from the year 1 of the Christian Era 

 for a thousand years to come. It is simple, accurate, 

 and unique. Invaluable to students and teachers. 



nted. Samples, post-paid, 25 cents. 



JEROME-THOMAS CO"~47 Lafayette Place, N.Y. 



scon's 

 Iemulsioii 



I 



! DOES CURE 



CONSUMPTION 



In its First Stages. 



Be sure you get the genuine. 



POSTAL DICTIONARY. 



A Manual of Postage Rates, and Information 

 upon Every Postal Subject which concerns 

 Merchants, Professional Men, Occasional 

 Correspondents, and All who Use the Mails. 

 Sixth edition, revised to date. 



Arranged in dictionary form, comprising about 150 

 titles (with complete index of over 400 references), 

 designed to furnish all facts bearing upon any par- 

 ticular topic, under its subject title. 



"About as convenient a little book as we have seen 

 for some time. Costs only 15 cents, but ought to 

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"Likely to be of great and constant service to all 

 who make much use of the mails. The ninety-four 

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 well arranged, knowledge of which should prevent 

 most of the delays and losses in the mails."— Posfort 

 Literary World. 



"Worth its weight in gold to the busy 'man of 

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"If aU who use the mails (and who does not?) will 

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Price, 15 Cents, Postpaid, 



ADDRESS N. D. C. HODGES, 



47 Ijafayette Place, IVe-nr Tforfc. 



ESTERBROOK'S 

 STEEL PENS. 



Of SUPERIOR AND STANDARD QUALITY. 

 Leading Nos.: 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEL PEN CO., 



Works: Oamden, N. J. 26 John St., New York. 



Ward's Natural Science Establishment 



minerals, 



Rocks, 



Fossils, 



Casts of Fossils, 



Geological 



Relief Maps. 



Mineralogy, Geology, Paleontology, Zoology, Osteology, Anatomy. 



Send for Circular. ROCHESTER, N. Y. 



stuffed Animals 



and Skins, 



mounted 



Skeletons, 



Anatomical 



models 



Invertebrates 



