180 An account of the Electro- Magnetic Engine. 



creased by a proportional enlargement of the machine. The numbers 

 of the following table must be accordingly multiplied by the number 

 -which would represent the enlargement. 



Number of 



battery 

 Elements. 



Pounds weight 

 raised one foot 

 high. 



Number of 

 battery 

 Elements. 



Pounds weight 

 raised one foot 

 high. 



1 



6 



23 



3174 





24 



24 



3456 



3 



54 



28 



4704 



4 



96 



32 



6144 



5 



150 



36 



7776 



6 



216 



40 



9600 



n 

 t 





44 



1 1 A 1 R 

 1 -lOl o 



8 



384 



48 



13824 



9 



486 



52 



16224 



10 



600 



56 



18816 



11 



626 



60 



21600 



12 



864 



64 



24576 



13 



1014 



68 



27744 



14 



1116 



72 



31104 



15 



1330 



76 



34656 



16 



1536 



80 



38400 



17 



1731 



81 



42336 



18 



1944 



88 



46464 



19 



2106 



92 



50784 



20 



'2400 



96 



55296 



21 



2766 



100 



60000 



22 



3904 















As one element costs three-half-pence daily, we may thence deduce 

 the expenses of the machine with ease. A machine, the magnets of 

 which were twenty-five times the size of the model, would accordingly, 

 with 100 elements, or for 12s. 6d., (the half of which is covered by the 

 copper,) exert a power equal to forty-five horses. 



Experience will hereafter show in how far the calculations which 

 have been made from models will coincide with reality. So much, 

 however, is certain, that, when the advantages come in practice at all 

 near the calculations, there can be no means of producing motion so 

 cheap and convenient as electro-magnetism. 



In a conversation which the translator had with the above-mentioned 

 Herr Stoehrer, that gentleman informed him that he was then engaged 

 in constructing a locomotive for the Leipsic and Dresden railway, by 

 order of the Company. He was, however, of opinion that it would 

 be more judicious to divide the power amongst several smaller machines, 

 than to concentrate it in one large machine. He seemed surprised that 



