March 24, 1893.] 



and arguments of tlip lecturer. For the further aid of the stu- 

 dent, equations are given representing the various reactions de- 

 scribed, and every reasonable detail of the operation is recorded. 

 Not only for the student in the lecture room is the book valu- 

 able, but also for the many who have not the advantage of col- 

 lege demonslration and who are compelled to rely largely upon 

 their own resources. For the convenience of such teachers as 

 may not have ready access to books of reference, Mr. Newth has 

 added in the form of an appendix a number of important and 

 useful tables, thirty-four in all, not often found in the smaller 

 works on chemistry. C. P. 



An Introduction to Qualitative Chemical Analysis by the Inductive 

 Method. A Laboratory Manual for Colleges and High 

 Schools. By Dklos Fall, M.S. Boston and New York, 

 Leach, Shewell & Sanborn. 8°. 



In this age of text-books it is difficult to be original, and the 

 most that our authors have aimed at is perfection and revision of 

 arrangement. Mr. Delos Fall, M.S., Professor Of Chemistry at 

 Albion College, has, however, recently given to the student of 

 chemistry a new manual of qualitative analysis decidedly unique 

 in its character. As he asserts in his prefatory note, this manual 

 is designed to impart but little chemical truth directly, aiming 

 rather to lead the student to gain that truth himself as nearly as 

 possible at first hand and as a product of his own thinking. A 

 preliminary chapter intended for both the student and the in- 

 structor gives the general plan of tlie book and describes the 

 method to be used. This consists essentially in leading ques- 

 tions calculated to bring the student on by his own research from 

 the fundamental ideas of chemical theory to the more advanced 

 practical application of his knowledge to systematic qualitative 

 analysis. 



The plan as described by the author is a combination of (1) 

 original investigation and (2) reference to authoi-ities. " In the 

 beginning (1) will be a very small factor and (3) correspondingly 



SCIENCE. 167 



large. As experience in manipulation, observation, and inter- 

 pretation increases (I) will increase and the necessary dependence 

 on (3) will decrease. To the experienced chemist (1) is very large 

 and (2) very small; in other words, he is his own authority." 

 Under the guidance of an able instructor the book will be most 

 valuable, and in such a case will, as the author has himself 

 demonstrated, produce accurate, enthusiastic, and independent 

 students. (-. p 



The Batrachians and Reptiles of the State of Indiana. By Oliver 

 P. Hay. Indianapolis, William P. Burford, Printer and 

 Binder. 



The present work consists of a list of the reptiles and batrachians 

 found in the State of Indiana, with a description of their charac- 

 teristics and with analytical keys for the determination of species. 

 The work describes 81 species in all, and is accompanied by a few 

 plates illustrating the subject. The design of the author is to 

 make a key which shall be usable by those who are not specialists 

 and he has therefore appended a glossary, explaining the use of 

 all scientific terms, and his general method of treatment is such 

 as to make the book intelligible even to a novice. 



The Birds of Indiana. By Amos W. Butlee. From the Trans- 

 actions of the Indiana Horticultural Society for 1890. 



This little pamphlet consists simply of a list of the birds found 

 in Indiana, either as residents or as temporary migrants. No 

 characteristics of species are given, although a large number of 

 illustrations are inserted, taken from Coues's ''Key to North 

 American Birds." 



The price of Dr. Sternberg's work on bacteriology, reviewed 

 in Science, Feb. 24, should have been stated as $8, cloth; and |9, 

 sheep; Wm. Wood & Co., New York, publishers. 



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 

 forms of dyspepsia." 



It reaches various forms of 

 Dyspepsia that no othei medi- 

 cine seems to touch, assisting 

 the weakened stomach, and 

 making the process of diges- 

 tion natural and easy 



Descriptive pamphlet free on application to 

 Kumlord Chemical Works, Providence, R. I. 



Beware of Substitutes and Imitations. 



For sale by all Druggists. 



Exchanges. 



[Freeof charge to all, if of satisfactory character. 

 Address N. D. C. Hodges, 874 Broadway, New V'ork.l 



For sale — A Zentmayer new model U. S. Army 

 Hospital monocular stand. Price $110, will sell tor 

 $75. Address H. C. Wells, No. 151 Broadway, New 

 York. 



For sale— A complete set of the third series of the 

 American Journal of Science (1870-1893) handsomely 

 bound in single volumes in dark brown half moroc- 

 co. Address G. H. Williams, 803 Cathedral Street, 

 Baltimore, Md. 



For sale, or for exchange for books on medi- 

 cine or surciery, new editions only, a large geo- 

 logical library, containing nearly all the State and 

 Government Eeports sincp \^f>. Will be pleased to 

 answer letters of inquiry and give intormation 

 Address R. ELLSWORTH CALL, Louisville, Ky. 



Per excbange.— Slides of Indian Territory Loup 

 Fork Tertiary Diatoms for other microscopic fos- 

 sils. Address S. W. WILLISTON, Univ. of Kansas, 

 Lawrence, Kans. 



For exchange. — Will exchange an "Ideal" Mi 

 croscope of R and J. Beck, London, 2 eye pieces 

 3 objectives, 3 inch, 1 inch, 1-6 inch; bull's eye con 

 denser on stand, substage condenser, mechanica 

 stage, etc , for any of the leading makes of type 

 writers. Particulars by mail. DELOS FALL, Albion 

 College, Albion, Mich. 



Sale, or exchange for similar material ; Diatoms 

 (Isthmia nervosa), unmounted, from San Francis 

 CO Bay. M. J. ELROD, Bloomington, 111. 



For sale or exchange. — I have a few copies of my 

 translation of " Strasburger's Manual of Vegetable 

 Histology, 1887," now out of print, which I wSl send 

 post-paid for $3 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. 

 rubellite, 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 exchange. — A private cabinet of about 

 200 species of fossils, well distributed geologically 

 and geographically. Silurian, about 40; Devonian, 

 about 60; Carboniferous, about 80; others, about 30. 

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



. Wants 



w 



ANTED— Second-hand copy Tryon's Systematic 

 Conohology. Please quote condition, date, price 

 n„t,„„n^ Hamline University, St. Paul. Minn. ' 



A 



COMPETENT TEACHER of botany in college 

 or university is open to engagement. Address 

 Box 86, Rochester, Mich. 



^AN any one inform me as to the age to which 

 cats have lived? I have one twenty years old 

 _...j T, -m.^^ ,.,„ . Eighty-flrst St., New York. 



Edward D. Webb, 132 ' 



n / ANTED — Second-hand. Foster's Physiology, 

 V*' 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 Conehology, 

 seven volumes. Parties having these for 

 sale will please address the undersigned, stating 

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



A GRADUATE ENGINEER will give instruction 

 L\ evenings in geometry, trigonometry and sur- 

 veying, mechanics, physics, mechanical drawing 

 and general engineering construction. Five years' 

 experience in field and editorial work nn engineer- 

 ing journal References furnished. C. S. H., lOS 

 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 in technical college or uni- 

 yersity 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 25,r00 specimens, all named, with about the 

 same number of duplicates, in minerals, crystals, 

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

 logical specimens and woods to any institution de- 

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

 crease the cabinet to 50,000 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. 



