October i8, 1889.] 



SCIENCE. 



Exchanges. 



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



N. D. C. Hodges, 47 Lafayette PI 



Will 

 Miller's 



ixchange "Princeton Revie 

 works on geology and other 

 mbersof " The Auk," "A: 



for 18S3, Hugh 



ntific works, for 



Naturalist," 



J. M. 



oks. Wri 

 Keck, Chardon, Ohio. 



A collection of fifty unclassified shells for the best offer 

 in bird skins ; also skins of California birds for those of 

 birds of other localities. Address Th. E. Slevin, 2413 

 Sacramento St., San brancisco, Cal. 



I have forty varieties of birds' eggs, side blown, first 

 ■class, in sets, with full data, which 

 books, scientific journals, shells, and 

 stating what you have to oger. — Dr. W. S. Stro 

 Bernadotte, Fulton County, III. 



" I wish to exchange Lepidopt^ 



uthe 



found in other locali 

 Volga, Brookings Co., Dakota. 

 Shells 



[ with parties in the 

 send western species 

 ."—P. C. Truman, 



shells, curiosities or 

 minerals address W. F. Lerch, No. 308 East Fourth St., 

 Davenport, Iow.i. 



I want to correspond and exchange with a collector of 

 beetles in Texas or Florida. — Wm. D, Richardson, 

 P.O. Box 223, Fredericksburg, Virginia. 



100 botanical specimens and analyses for exchange. 

 Send list of those desired and those which can be fur- 

 nished, and receive a similar list m return. Also cabinet 

 specimens and curiosities for the same. Scientific corre- 

 snondence solicited. — E. E. Bogue, Orwell, Ashta. 

 County, O. 



I will sell to chapters or individual members of the 

 Agassiz A'^sociation, 25 fine specimens of fossil plants 

 irom the Dakota group (cretaceous), correctly named, for 

 $2. so. Send post-ofiice order to Charles H. Sternberg 

 ^author "Young Fossil-Hunters"), 1033 Kentucky 

 Street, Lawrence^ Kan. 



One mounted single achromatic ph 

 making 4 X .s pictures, in excellent ( 

 ■"new model" double dry-plate hold( 

 geological or minerali'gical spei 





(4" X 5"). for fin 

 properly cla 



ng West Lehigh Avenue, 



-Charles E. 

 Philadelphia, Penn. 



The undersigned wishe: 

 -exchange of Lepidoptera of eastern Pennsylv 

 those from other localities. All. my specii 





Cha 



and 



17th Street, Philadelphia, Penn. 



California onyx, for minerals 

 iection. — W. C. Thompson, 612 

 York, N.Y. 



S. Westcott, 613 North 



s received at Editor 

 Sept. 23-Oct. 12. 



LSOP, F. C. Practical Electric Bell Fitting. London 

 and New York. E. & F. N. Spon, 142 p. 12°. 81.25. 



LLOU, M. M. The New Eldorado : A Summer Jour- 

 ney to Alaska. Boston, Houghton, Mifilin, & Co. 



.15' P- 



$r.5o. 



A. A Text-Book of Organic Chemistry. 

 Tr. by George M'Gowan, Ph.D. New York, Van 

 Nostrand. 544 p 12". 

 AVATSKV, H. p. The Key to Theosophy. London, 

 Theosoph. Publ. Co.; New York, W. Q. Judge. 307 



Bosto 



nd Ne 



nts. 



P- 



75 



, G. F. A Handbook of Descriptive and 

 Practical Astronomv. L The Sun, Planets, and 

 Comets. 4th ed, Oxford, Clarendon Pr. 676 p. 

 8°. (New York. Macmillan, 85.25.) 



Cook Book. Presbyterian Compiled by the ladies of the 

 First Presbyterian Church, Dayton, O. Dayton, 

 Historical Publ. Co. 1886. 178 p. 12°. 



Darwin, C. The Structure and Distribution of Coral 

 Reefs. 3d ed. New York, Appleton. 344 p. 12°. 



EnseSanza Primaria, Boletin de. Vol. L No. i. Mon- 

 tevideo, Dornaleche y Reyes. 80 p. 8°. 



Fesrbl, W. a Popular Treatise on the Winds. New 

 York, Wiley. 505 p. 8°. $4. 



Houston. E. J. A Dictionary of Electrical Words, 

 Terms and Phrases. New York, W. J. Johnston Co. 

 640 p. 16°. S2.50. 



Kapp, G. Alternate-Current Machinery. (Van Nostrand 

 Science Series. No. q6.) New York, Van Nostrand. 

 199 p. 24°. so cents. 



Klemm, L. R. European Schools ; or. What I saw in 

 the Schools of Germany, France, Austria, and Swit- 

 zerland. New York, Appleton. 419 p. 12". $2. 



Lancaster, A. Notes Biographiques sur J.-C. Hou- 

 zeau. Bruxelles. F. Hayez. 120 p. S°. 



Lesley. J. P. A Dictionary of the Fossils of Pennsyl- 

 v.inia and Neighboring States named in the Reports 

 and Catalogues of the [Pennsylvania Geological] Sur- 

 vey. Harrisburg, Geol. Surv. 437 p. S°. 



Mills, W. A Text-Book of Animal Physiology. New 

 York, Appleton 700 p. 8°. 



Mott. H. a. a Chart Relative to the Composition. Di- 

 gestibility, and Nutritive Value of Food. New York, 

 Wiley. f°. $1.25. 



MuRDOCK, H. The Reconstruction of Europe. Boston 

 and New York, Houghton, Mifflin, & Co. 42r p. 

 12°. $2. 



Nichols, W. F. Topics in Geography. Boston, Heath. 

 174 p 12°. 55 cents. 



Parkes, L. C. Hygiene and Public Health. Philadel- 

 phia, Blikiston. 471 p. 12°. S2.50. 



ual of Geography. 



Redwav, J. W. The Teacher's 



Boston, Heath. 174 p. 12". 55 cents. 



Sargent. C. S. Scientific Papers of Asa Gray. Vol I. 

 Reviews of Works on Botany and Related Subjects, 

 1834-S7. Vol. II. Essays; Biographical Sketches, 

 1841-86. Boston and New York, Houghton, Mifllin, 

 & Co. 900 p. 8°. $6. 



Stephens, C. A. Living Matter: Its Cycle of Growth 

 «nd Decline in Animal Organisms Norway Lake, 

 Me., The Laboratory Co. 107 p. 12*^. 



TiLDEN, W. S. Common School Song-Reader. Boston, 

 Ginn, 176 p. 12°. 45 cents. 



Woman's Cycle, The. Vol. I. No. i. New York, Mrs. 

 C.J.Haley. 20 p. 4". $2.50 per year. 



CAIN 



OME POUND 



A GAIN OF A POUND A DAY IN THE 

 CASE OF A MAN WHO HAS BECOME "ALL 

 RUN DOWN," AND HAS BEGUN TO TAKE 

 THAT REMARKABLE I'LESII PRODUCER, 



Fmulsiow 



OF PURE COD LIVER 0!L WITH 



Hypophosphites of Lime & Soda 



IS NOTHING UNUSUAL. ThiS FEAT 

 HAS BEEN PERFORMED OVER AND OVER 

 AGAIN. PALATABLE AS MILK. EN- 

 DORSED BY Physicians. Sold by all 

 Druggists. Avoid substitutions and 

 imitations, 



GUARANTY INYESTMENT COMPANY 



CAPITAL $250,000. 



7°|o Guaranteed Farm Mortgages 7''|o 



The Company sends each year to Kansas and Nebraska for the pur- 

 pose of examining its loans and methods of business a 



COMMITTEE OF INVESTORS. 



The Committee for i88q visited Fifty counties in the two States, ex- 

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 every one to be SAFE. 



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Address for Monthly Bulletin and Investors'' Committee Report 



HENRY A. RILEY, General Eastern Manager, 191 Broa(iwa3^ N.Y. 



