October 4, 1889.] 



SCIENCE. 



'ith parti 



"—P. 



Exchanges. 



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

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

 York.l 



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

 class, in sets, with full data, which I will exchange for 

 books, scientific journals, shells, and curios. Write me, 

 stating what you have to offer. — Dr. W. S. Strodh, 

 Bernadotte, Fulton County, 111. 



'* I wish to exchange Lepidoptera 

 eastern and southern states. I will 

 for those found in other localities 

 Volga, Brookings Co., Dakota. 



Shells and curiosities for marine shell: 

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

 Davenport, Iowa. 



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 in return. Also cabinet 

 specimens and curiosities for the same. Scientific corre- 

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

 County, O. 



I will sell to chapters or individual members of the 

 Agassiz Association, 25 fine specimens of fossil plants 

 from the Dakota group (cretaceous^ correctly named, for 

 $2.50. Send post-office order to Charles H. Sternberg 

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

 Street, Lawrence, Kan. 



One mounted single achromatic photographic lens for 

 making 4X5 pictures, in excellent condition ; also one 

 '•new model" double dry-plate holder (4" X s"), for fine 



feological or nuneralogical specimens, properly classi- 

 ed. — Charles E. Frick, 1019 West Lehigh Avenue, 

 Philadelphia, Penn. 



Drawings from nature — animals, birds, insects, and 

 plants — to exchange for insects for cabinet ; or I will 

 send them in sets of ten each for ten cents in stamps. 

 My drawings in botany are in detail, showing plant, 

 leaves, flowers, seed, stamens, pistils, etc. — Alda M. 

 Sharp, Gladbrook, lo. 



The undersigned wishes 

 exchange of Lepidoptera 

 those from other localities, 

 and in good condition. — Charles S. Westcott. 613 North 

 17th Street. Philadelphia, Penn. 



California onyx, for minerals and coins Hot in my col- 

 lection. — W. C. Thompson, 6t2 East 141st Street, New 

 York, N.Y. 



A lew first-class mounted birds, for first-class birds' 

 eggs of any kind in sets. — J. P. Babbitt, secretary 

 Chapter 755, 10 Hodges Avenue, Taunton, Mass. 



to make arrangement: 

 of eastern Pennsylv 



for the 



SCOTT'S 



EMULSION 



Of Pure Cod 



Liver Oil and 



HYPOPHOSPHITES 



of Lime and 



Soda 



Is endorsed and prescribed by leading 1 

 phjsiciina because both the Cod, Livifv Oil 1 

 and Hypophosphites are the recognized 1 

 agents in the cure of Consumption, It is i 

 as palatable as milli. ' 



Scoff's Emulsion S^^s^-r "J 



is a wonderful Flesh I'roducer. It is the 

 Best Remedy lor CONSUMPTION, 



Scrofula, Bronchitis, Wasting' Dis- 

 eases, Chronic Coug'hs and Colds. 



Ask for Scott's Emulsion and take no other, j 



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 GO., 



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



THE 



COMPANY. 



98 MILK ST., BOSTON, MASS. 



This Company owns tbe Letters 

 Patent granted to Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 1§77, 

 No. 186,7§7. 



The Transmission of Speech by 

 all known forms of ELECTRIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

 Company by the above patents, and 

 renders each individual user of tel- 

 ephones, not furnished by it or its 

 licensees, responsible for such un- 

 lavrful use, and all the conse- 

 quences thereof and liable to suit 

 therefor. 



PATENT WRENCH 

 AND SCREW DRIVER COMBINED. 



Turns Nuts, Gas Burners or Pipe without adjustment. 

 Made of Best Polished Steel. Sent by mail for 25 eta. 

 CHABLE3 U. Ely, p. O. Box 1915, New York City. 



aUARANTY INYESTMENT COMPANY 



CAPITAL $250,000. 



7°|o Guaranteed Farm Mortgages 1\ 



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 1889 visited Fifty counties in the two States, ex- 

 amined over 100 farms on which loans had been made and reported 

 every one to be SAFE. 



The Company will be glad to send to any address the Report of the 

 Committee which presents a very interesting statement of the general 

 development of Kansas and Nebraska. 



A large number of loans equally as good as any examined by the 

 Committee are always on hand for sale. 



Address for Monthly Bulletin and Investors^ Committee Report 



HENRY A. RILEY, General Eastern Manager, 191 Broadway, N.Y. 



