ff%i 



SCIENCE 



New Series. 

 Vol. VIII. No 



Friday, December 2, 1898. 'ST^.XSi^l^^.,^.,, 



►tatic Machines 



for all purposes. 



X=Ray Apparatus 



and Supplies. 



SEND FOR BULLETIN No. 24. 



SWETT & LEWIS CO. 



9 Bromfield St., Boston, Mass. 



ITTfc • "% -_ -m4| c<4-C! ^'® hsNe recently prepared a number of finely mounted dissections, in glass 

 AJJJHJAU^|JL& vS • jars, to illustrate the important anatomical features of the principal types of 

 invertebrate animals. These include the Sea-Anemone, Sea-Cucumber, Sea-Urchin, Starfish, Pond Mussel, 

 Squid, Crayfish, etc., and are superior to anything before obtainable. Prices from $1.50 to $4.00 each. 

 WRITE FOR LIST OF BIOLOGICAL SUPPLIES. 



WARD'S NATURAL SCIENCE ESTABLISHMENT, ROCHESTER, N. Y. 



MIITIATURE INCAITDESCENT LAMPS. 

 MINIATURE LAMP RECEPTACLES. 

 X-RAY TUBES AND APPARATUS. 

 FLUOROSCOPES — ^ 



Catalogues on Application. 



Edison Decorative and Miniature Lamp Department, 



{General Electric Company,) 



HARRISON, N. J. 



My New Catalogue B^— ^ 



A college professor writes : "Many thanks for the catalogue of Electrical Instru- 

 ments which I received to-day. Let me congratulate you on the whole ' get-up ' 

 of the catalogue. The paper and print are very good, the illustrations excellent 

 and the explanations clear. To my mind it is the best of its kind that I have 

 seen yet." 



JAMES Q. BIDDLE, 



Send 10 Cents in Stamps for a Copy. ^q^ p^^^^, B„i,di„g^ Philadelphia. 



