. Scientific American Volume 97 Number 16 (October 1907) . must invest enough money to insureGood Material and Motors have ground cylin-ders, pistons, piston rings and crankshafts, crank and piston pins hard-ened, gas tight adjustable parts finished according to mi-crometer measurements and are inter-changeable. Write for Catalogue ifinterested. Engines from 2 to 14 ,S-cycle, light weight, easy Motor Co., Lincoln, Neb. RADIUM AND THE RADIO-ACTIVE Substances. No better or clearer scientific account hasbeen published than that contained In
. Scientific American Volume 97 Number 16 (October 1907) . must invest enough money to insureGood Material and Motors have ground cylin-ders, pistons, piston rings and crankshafts, crank and piston pins hard-ened, gas tight adjustable parts finished according to mi-crometer measurements and are inter-changeable. Write for Catalogue ifinterested. Engines from 2 to 14 ,S-cycle, light weight, easy Motor Co., Lincoln, Neb. RADIUM AND THE RADIO-ACTIVE Substances. No better or clearer scientific account hasbeen published than that contained In ScientificAmerican Supplement 14-29. The paper presentsall that Is at present known about radium and the radio-active substances. Price 10 cents, by mail. Munn & Co.,361 Broadway, New York City and all $60 GOES LIKE SIXTY SELLS LIKE SIXTY*| SELLS FOR SIXTY GILSON (GASOLENE ENGINE For Pumping. Cream .orators. Churns,Wash Ma- ^chines, etc.*FEEE TEIAL ^____-_____ Aslcfor catalog- all sizei Gilson mfg. co. loo Park St. Port WisMaitoB, Wia. DealersWanted Build It Yourself Any boy or amateur can build this perfect little1 H. P. veitical, 2 cycle gasoline engine on a footpower lathe from rough castings by following oursimple blue print working drawings. Othersare doing it, so ran you. No engine equals itfor simplicity, strength and durability. Fillsevery requirement where light motive poweris needed. Write for booklet and prices oncastings and finished engines. GARDNER MOTOR COI1PANY 5011 Delmar Ave., St. Louis, U. 8. A. RUBBER STAMP MAKING. —THIS article describes a simple method of making rubberstamps witb Inexpensive apparatus. A thoroughlypractical article written by an amateur who has had ex-perience in rubber stamp making. One In Supplement 1110. Price 10cent
Size: 2123px × 1176px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidscientificamerican1907101
