June 9, iSg^.] 



SCIENCE. 



321 



We would say that perhaps Mr. Colas was led by sentiment to 

 make the unqualified statement that all the glory of the great 

 mathematical computation, for that it was, rests with LeVerrier. 

 The statement, however, is very questionable. 



In glancing through the pages of the handbook, we can but 

 admire the neatness with which the text has been arranged, and 

 the selection of interesting objects gives a field of wide range. 



We would recommend these Uvo publications to the ambitious 

 learner of the starry heavens as fit companions for his watches. 



G. A. H. 



Missouri Botanical Garden. Fourth Annual Report. St. Louis, 

 1893. Plates. 226 p. 



This is a handsomely gotten up volume, in which we find sev- 

 eral papers of interest. The report of the director. Dr. William 

 Trelease, shows a flourishing condition of affairs. The herbarium 

 now contains some 203,000 specimens, and the library over 11,000 

 volumes and pamphlets. The valuable library of Dr. Lewis 

 Sturtevant was received as a donation, and included many manu- 

 script notes. The only condition was that he retain the books 

 during his lifetime or for so long a time as he needed them. The 

 third annual flower sermon and the proceedings at the third 

 annual banquet are reported in full. In the latter we find many 

 interesting statements respecting Mr. Henry Shaw, the founder 

 of the garden. There are also two scientific papers: "List of 

 Plants Collected in the Bahamas, Jamaica, and Grand Cayman," 

 by A. H. Hitchcock, and " Further Studies of Yuccas and Their 

 Pollination," by Wm. Trelease. 



Professor Hitchcock discusses in his introductory remarks 

 various principles of nomenclature, finally taking 1753 as the 

 starting point, in accordance with the recommendation of the 

 Botanical Club of the A. A. A. S. The double citation plan is 

 followed, the original author of the name being placed in paren- 

 thesis, the name of the author of the combination coming last. 

 The original spelling of the specific name has been followed, ex- 



cept in those cases where typographical errors were clearly ap- 

 parent. Notes are given on many of the species and several new 

 ones are described. The relationship of the flora to the surround- 

 ing region is also discussed, and notes are given upon geographical 

 distribution. Dr. Trelease's paper gives descriptions of the various 

 species of Yucca, and mentions the mode in which some of them 

 are fertilized. He agrees with Professor Riley that fertilization 

 takes place through the intervention of species of Pronuba. He 

 considers Yucca whipplei to belong to the genus Bespero-Yucca^ 

 the common Spanish Bayonet of San Bernardino region being 

 considered as var. graminifolia. This variety is fertilized by a 

 new form of Pronuba, described as P. maculata, var. aterrima. 

 J. F. J. 



The lists of expectant graduates of Sibley College, Cornell Uni- 

 versity, in mechanical engineering, are just pubhshed by the reg- 

 istrar. The total number of candidates for the first degree is just 

 one hundred; for the second degree, twelve come up, and are 

 already, in most cases, through their examinations. Two or three 

 of the first-degree men may fail; but the total will exceed one 

 hundred. The graduating class, for the whole university, in- 

 clusive of its law school and special courses of four years' length, 

 will be considerably above three hundred. There are about two 

 hundred graduate students on the catalogue, a large proportion of 

 whom take their degrees this year. Of these, many take the 

 first degrees in Sibley College, where the custom of going through 

 the regular "general courses" before entering the professional 

 school is rapidly gaining ground, and is greatly encouraged by 

 the authorities — where the student can afford the time and the 

 expense. 



— The Contemporary Publishing Co. have just issued an im- 

 portant work on the subject which to-day most attracts the atten- 

 tion of geographers : "The Arctic Problem and Narrative of th& 

 Peary Relief Expedition," by Professor Angelo Heilprin, the 

 leader of the expedition. 



ATonk 



For Brain- Workers, the Weak and 

 Debilitated. 



Horsford's Acid Phosphate 



is without exception the Best 

 Remedy for relieving Mental 

 and Nervous Exhaustion; and 

 where the system has become 

 debilitated by disease, it acts as 

 a general tonic and vitalizer, 

 affording sustenance to both 

 brain and body. 



Dr. J. C. Wilson, Philadelphia, Pa., 

 says: '* I have used it as a general tonic, 

 and in particular in the debility and 

 dyspepsia of overworked men, with sat- 

 isfactory results." 



Descriptive pamphlet free. 

 num!ord Chemical AVorks. Providence. R. I. 



Beware of Substitutes and Imitations. 



[Free' 

 Address 



Exchanges. 



;harge to all, if of satisfactorycharacter. 

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



For sale or exchange. — One latest complete edi- 

 tion of Watfs Dictionary of Cliemistry. in fair con- 

 dition; one thirty volume edition (9th) of Allen's 

 EncyclopEedia Britannica, almost new. Will sell 

 cheap for cash or will exchange for physical or 

 chemical apparatus. Address Prof. "W. S. Leaven- 

 worth, Ripon College, Ripon, Wis. 



Exchange.— One celestial, one terrestrial globe, 

 one lunatettis and charts, celestial maps, diagrams 

 and ephemeris from 1830 to 1893, astronomical 

 works, all in good condition. Will sell cheap or ex- 

 change. Make ofEer. C. H. Van Dorn, 79 Nassau 

 St., New York. 



The Rev. A. C. Waghorne, New Harbor. New- 

 foundland, wishes to sell collections of Newfound- 

 land and Labrador plants, all named by competent 

 botanists. He is going on a missionary journey 

 along the Labrador coast, from the middle of July 

 till October, and in return for much needed aid to- 

 wards (Episcopal) Church purposes in that region, 

 willbeglsd to be of service to any botanists who 

 may write to him. Letters posted in the U. S. up 

 to July 1 will reach him at the above address, and 

 if posted later will be forwarded. 



For sale.— J. D. Dana's Report on Crustacea of 

 the U. S. Exploring Expedition under Charles 

 Wilkes. Test and plates well bound in three vol- 

 umes, half morocco, $75. Samuel Henshaw. Bos- 

 ton Society of Natural History, Boston, Mass. 



For exchange — I wish to exchange cabinet skins 

 of Californian birds or mammals for any book on 

 the following list, books if second-hand to be in 



SDod order. Manual of Vertebrates, fifth edition, 

 . S. Jordan; Nests and Eggs of North American 

 Birds, Oliver Davie; Marine Mammals of the West 

 Coast of North America, C. M. Scamraon; The 

 United States and Mexican Boundary Survey, Vol. 

 II,, Zoology, S. F. Baird. F. Stephens,Witch Creek, 

 San Diego Co., Cal. 



Minerals for exchange—John HoU. RoUo, Wil- 

 mington, Delaware. 



For sale or exchange.— Johnson's Universal Cyclo- 

 predia, 8 vols., ed. 1888. Binding, half-morocco. 

 Will sell cheap for cash or would exchange for 

 typewriter. Address W. J. McKom, Mason. Mich. 



I have 500 microscopic slides to exchange in lots 

 to suit. Want Kodak, first-class field-glass or 

 scientific books. A. C. Gruhlke. Waterloo, Ind. 



For sale or exchange— A Telescope (36 diameters, 

 copper barrel) — for S20 cash or scientific books of 

 that value. A. N, Somers. La Porte, Ind. 



Wants. 



w 



ANTED. — Second-hand copy of Ehrenberg'^s 

 Radiolaria, Berlin, 1875. Selected diatom 

 slides, cash or both in exchange. D. C. Lewis, M.D. 

 Skaneateles, N. Y. 



WANTED, as principal of a flourishing technical 

 school, a gentleman of education and experi- 

 ence who will be capable of supervising both yie- 

 chanical and common school instruction. Special 

 familiarity with some technical branch desirable. 

 Address, giving age, qualifications, etc., J. B. Bloom- 

 ingdale. Fifty-ninth street and Third avenue, N. Y. 



WANTED. — A young man as assistant in our 

 microscopical department. Queen & Co., 

 Philadelphia. 



THE undersized desires specimens of North 

 American Grallinae in the flesh for the study of 

 their pterylosis. These species are especially de- 

 sired: Colinus ridgwayi, cyrtonyx montezumae, 

 deudragapusfranklini, lagopus welchi, tympanuchus 

 cupido and pedioecetes phasianellus. Any persons 

 having alcoholic specimens which they are willing 

 to loan or who can obtain specimens of any of the 

 above are requested to communicate with Hubert 

 Lyman Clark, 3922 Fifth Avenue, Pittsburgh. Pa. 



COMPETENT TEACHER of botany in college 

 or university is open to engagement. Address 

 , Box 86, Rochester, Mich. 



CAN any one inform me as to the age to which 

 cats have lived? I have one twenty years old. 

 Edward D. Webb, 132 W. Eighty-first St., New York._ 



WANTED — Second-hand. Foster's Physiology, 

 Balfour's Comparative Embryology, Claus & 

 Sedgwick's Zoology. Flower's Osteology of Mam- 

 malia, Vine's Physiology of Plants. Please state 

 editions and prices asked and address Richard 

 Lees Brampton, Ontario, Canada 



A GRADUATE ENGINEER will give instruction 

 evenings in geometi-y. trigonometry and sur- 

 veying, mechanics, physics, mechanical drawing 

 and general engineering construction. Five years' 

 experience in field and editorial work on engineer- 

 ing journal. References furnished. C. S. H., 102: 

 Tribune Building, New York. 



