February 17, 1893.] 



SCIENCE. 



97 



will, in the first instance, appeal especially to British students, 

 but from one point of view they may still more court the atten- 

 tion of students elsewhere, for, when specimens are unattainable, 

 good descriptions and figures are an exceedingly welcome substi- 

 tute. Every one must value the facilities for work provided by 

 the elaborate synoptic tables. 



Those who can remember the devotion to natural history of 

 the late Mr. Wilson Saunders and the vast and admirable collec- 

 tions of insects which he accumulated from all parts of the world, 

 may be disposed to believe that his son, the author of the present 

 work, was born as well as bred an entomologist. The name of 

 Edward Saunders, to those acquainted with his lifelong studies 

 and with his previous writings, will be an ample guarantee that 

 in this book also they will find the most conscientious accuracy 

 and all the thoroughness of treatment that the subject admits. 

 It is commonly reported in England that the revenue officers of 

 the United States levy duty upon meteorites which descend from 

 the sky, but probably the hemiptera pass the frontier without the 

 least regard to tariffs, or quarantine regulations, or laws against 

 the importation of destitute aliens. How little, then, can the 

 free-trade precincts of Great Britain and Ireland hope to defy 

 the invasion of any new bug that may choose to enter ! But, at 

 any rate, the collector who finds within those precincts one of the 

 Heteroptera that has not been described in the volume now under 

 review, may well suspect that it has been recently introduced 

 into them from without. 



In a work so sumptuously printed one may be permitted to 

 wonder why there is no index to the plates and why no refer- 

 ences are given in the text to the excellent figures which those 

 plates contain. As a matter both of good taste and convenience 

 it would surely also have been better to give in full the names 

 of authorities, instead of such abbreviations as Muls. and Put. for 

 Mulsant and Puton. The reader may find a chance of guessing 

 that Boh. and Fall, stand for Bohemann and Fallen, but Lap. 

 and Spin, and Duf. find no explanation within the four corners 

 of the book itself. The title, " Hemiptera Heteroptera,"' is quite 



justified by the usage of other authors, and Hemiptera seems 

 really a better title than the alternative Rhynchota, but in the 

 division of the order into Heteroptera and Homoptera it is very 

 unsatisfactory that the names applied to the suborders should 

 have the same termination as that appropriated to so many orders 

 of the Insecta. A protest may be made, too, against the use, 

 now becoming common, of the word "asymmetrical." Those 

 who are discontented with " unsymmetrical " ought to write 

 '■asymmetric," and be pedantic at both ends of the word. From 

 misprints and similar blemishes the volume is very agreeably 

 free, although there is some obscurity in the account of Corixa, 

 which is said to contain twenty British species divided into four 

 subgenera, whereas the synoptic table shows six subgenera and 

 twenty-five species, to which a twenty sixth is doubtfully added 

 in the descriptions. 



The zeal of collectors will be stimulated to find again such 

 prizes as Aradus Lawsoni and Pygolampis pidentata, or the 

 greenish black Prostemma guttula, with scarlet legs and elytra, 

 and antennaj pitchy brown. But the study of the group has 

 more to commend it than the tantalizing rarity of some of the 

 species. It is no little advantage that a great many of them are 

 on the contrary common and easy to obtain. They do not, it is 

 true, flaunt themselves in mid air like butterflies or birds, but 

 rather beep themselves quiet on trees and various lowlier plants, 

 in mosses, in ponds, and other retreats, from all of which they 

 can without much difficulty be induced to come forth. The 

 search for Hemiptera is pleasantly united to the observation of 

 plant life, and when a collection has been made, the curious 

 shapes and bright colors of the specimens are likely to be asso- 

 ciated with treasured memories of holiday excursions, fair scenes, 

 and delightful rambles, that have been enlivened by this quest. 

 Few of those who make themselves acquainted with Mr. Saun- 

 ders' volume will continue to despise the Hemiptera, and few of 

 those who take any deep interest in the Hemiptera will care to be 

 without Mr. Saunders' volume. Thomas R. R. Stebbing. 



Tuabrldge Wells, England. 



Bffspepsia 



Dr, T. H. Andrews, Jefferson 

 Medical College, Philadelphia, says of 



Horsford's Acid Phosphate. 



"A wonderful remedy which gave me 

 most gratifying results in the worst 

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It reaches various forms of 

 Dyspepsia that no othei medi- 

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 the weakened stomach, and 

 making the process of diges- 

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Descriptive pamphlet free on application to 

 Ruiiilord Chemical Works. Providence, R. I. 



Beware of Substitutes and Imitations. 



For sale by all Druggists. 



[Fr 

 Addrt 



Exchanges. 



charge to all, if of satisfactory character. 

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



T have a few copies of my 

 translation of " Strasburger's Manual of Vegetable 

 Histology, 1887, '■' now out of print, which I will send 

 post-paid for %'6 or for one dozen good slides illus- 

 trating plant or animal structure. Address A. B. 

 Hervey, St. Lawrence University, Canton, N. Y. 



The undersigned has the following specimens to 

 exchange for crystals of any eastern or foreign lo- 

 calities or Indian relics: tin ore, metacinnabarite, 

 stibnite, garnierite, calenanite, hanksite, ulexite. 

 rubelUte. lepidolite, blue and green onyx, Cal. pine- 

 ite, aragonite on chalcedony, cinnabar, double re- 

 fracting spar, clear and clouded, and others. J. R. 

 Bush, care of General Delivery, Los Angeles, Cal. 



For sale or exchaDge. — A private cabinet of about 

 200 species of fossils, well distributed geologically 

 and geographically. Silurian, about 40; Devonian, 

 about 50; Carboniferous, about 80; others, about 30. 

 Frank S. Aby, State University, Iowa City, la. 



For exchange. — Minerals, fossils, F. W. shells, 

 land shells, native woods, Indian relics, two vols, 

 of Smithsonian reports, odd numbers of scientific 

 magazines, copper cents, etc., for good minerals 

 not in my collection, good arrow- and spear-heads 

 and natural history specimens of all kinds. Cor- 

 respondence solicited with list of duplicates. G-. 

 E. Wells, Manhattan. Kan. 



For sale or suitable exchange. — A spectrometer 

 made by Fauth & Co., Washington, D. C., according 

 to the plan of Prof. C. A. Young. This instrument 

 is suitable for the most advanced investigations 

 and determinations. Cost originally S700 and has 

 been used but little. Will be disposed of at a con- 

 siderable reduction. Address Department of Phys- 

 ics, Ohio University, Athens. O. 



I will send British land and fresh-water shells in 

 return for those of America, any part, sent to me. 

 I have at present about fifty or sixty species, with 

 many varieties. W. A. Gain, Tuxford, Newark, 

 England. 



The Biological Department of Hamline UDivorsity 

 desires to offer microscopic slides of animal tissues, 

 or whole animals, in exchange for first-class fossils. 

 Address correspondence to Henry L. Osborne, Ham- 

 line University, Baniliue. Minn. 



Kindly mention " Science ^' in 

 writing to Advertisers* 



Wa7tts. 



CAN any one inform me as to the age to which 

 cats nave lived? I have one twenty years old. 

 Edward D. Webb, i:i2 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. 



WANTED.— American Journal of Conchology, 

 seven volumes. Parties having these for 

 sale will please address the undersigned, stating 

 condition and price. R.Ellsworth Call, Louisville, Ky. 



A GRADUATE ENGINEER will give instruction 

 evenings in geometry, 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. 



WANTED.— By well- qualified and experienced 

 science master and associate of the Royal 

 School of Mines, London, aged 26 (at present in 

 England), a mastership m technical college or uni- 

 versity for any of the following subjects: Engineer- 

 ing sciences, geology and mineralogy, physics, chem- 

 istry and metallurgy, etc.. etc. Can provide excel- 

 lent references and credentials. Apply, J. G.. 17 

 Sussex St., Rochdale, England. 



A GRADUATE of the University of Pennsylvania 

 and a practical mineralogist of twenty years' 

 experience desires to give his services and a cabi- 

 net of 2.'i,i00 specimens, all named, with about the 

 same number of duplicates, in minerals, crystals, 

 rocks, gems, fossils, shells, archieological and ethno- 

 logical specimens and woods to any institution de- 

 siring a fine outfit for study. The owner will in- 

 crease the cabinet to 50,0(J0 specimens in two years 

 and will act as curator. Correspondence solicited 

 from any scientific institution. J. W. Hortter, 

 M.D.. Ph.D.. San Francisco, Cal., General P. O. 

 Delivery. 



POPULAR MANUAL OF VISIBLE SPEECH AND 

 VOCAL PHYSIOLOGY. 



For use in Colleges and Normal Schools. Price 50 cents 



Sent free by post by 



N. D. C. HODGES, 8T4 Broadway, N. V. 



