PROCEEDINGS OF THE POLYTECHNIC ASSOCIATION. 



459 



A Specimen of Microscopic Engraving. 



The chairman oxhibiLed an cng-raving of the Declaration of Independence 

 of precisely the size of a silver dime. It was engraved on steel by au 

 Irish artist, then in the employ of (lie Bank Note Company, but since 

 deceased. Kfac aimile of the signatures of the committee who drafted the 

 instrument was api)ended by means of a pantograph. To read the instru- 

 ment required the aid of a very strong magnifying glass. 



The Chairman, instead of his usual scientific summary, presented the 

 following statistical tables, made up to the close of the year 1864. 



Railroads of the United States, Jan. 18G5. 



Recapitulation of Annual Statement of thfi American Railroad Journal, Jan. 7, 18C5. 



States, etc. 



Maine 64ii,69 



New Ilampsliire 687,7.'{ 



Vermont 5S(>,17 



Massachusetts 1,'.'AH,bo 



Khode Island 151,74 



Connecticut 7 1 5,07 



New York .",,570,92 



New Jersey 1,001,25 



Pennsylvania 4,32.3,01 



Delaware 182,59 



Maryland and District of Columbia 099,40 



West Virginia .301,. 00 



Kentucky 898,40 



Ohio .3,954,3.3 



Michigan 1,614,50 



Indiana 2,482,50 



Illinois 3,000,70 



"Wisconsin 1,44.9,70 



Minnesota 1,584,00 



Iowa 2,037,10 



Missouri 1,412,39 



Kansas 360,00 



California 028,98 



Oregon 19,50 



Mileage- 

 Total. Completed. 

 509,37 



Total in Loyal States. 



34,310,62 



Virginia 2,054,48 



North C.-iroiina 1,352,42 



South Carolina 1,072,93 



Georgia 1,635, 23 



Florida 586,50 



Alabama 1,434,70 



Mis.-issippi 1, 072, 12 



Tennessee 1,392,49 



Arkansas 701,33 



Louisiana 838,00 



Texas 2,787,00 



Total in Rebel States 14,927,20 



Grand Total 49,237,82 



659,32 

 580,17 



1,280,93 

 119.24 

 635,07 



2,869,47 

 836,27 



3,610,29 

 126,90 

 467,30 

 361,50 

 564,20 



3,389,65 

 874,22 



2,199,40 



3,119,40 



1,045,20 

 161,00 

 804,80 

 925,75 

 40,00 

 147,.39 

 19,50 



25,372,25 



1,378,70 

 977,30 

 988,93 



1,421,22 

 401,50 

 891,16 

 867,12 



1,317,78 



38,50 



.335,75 



451,50 



9,069,46 



34,411,71 



Cost of Road 



and Equipment. 



$18,297,035 



22,572,830 



23,841,120 



68,979,200 



4,571,496 



22,097,496 



135,023,240 



38,904,372 



169,184,691 



4,548,850 



23,847,123 



22,120,393 



20,877,180 



121,147,588 



36,130,307 



71,318,673 



117,375,523 



41,880,302 



7,700,000 



27,715,052 



51,187,275 



1,400,000 



7,870,000 



500,000 



$1,050,356,406 



§45,146,843 

 19,308,018 

 22,423,690 

 29,169,513 



8,628,000 

 21,351,102 

 24,112,507 

 33,967,478 



5,800,000 

 13,527,664 

 16,509,772 



$237,054,587 



$1,287,310,993 



Tears. 



1820. 

 1827. 

 1828. 

 1829. 

 1830. 

 1831. 

 1832. 

 1833 . 

 1834. 

 1835. 



PROGRESS OP RAILROADS. 



Table showing the mileage of railroads iu operation near the 1st January yearly. 



Miles. 



3 



3 



3 



28 



41 



64 



131 



576 



762 



918 



Years. 



1836. 



1 837 . 



1838. 



1839. 



1840. 



1841. 



1842. 



1H43. 



1844, 



1845. 



Miles. Years. Miles. Years. Milea. 



1,102[1846 4,870 1856 19,251 



1,421 I 1847 5,336 1857 22,625 



1,843 1848 5,682 1858 26,090 



1,920 1849 6,350 1859 26,755 



2,19711850 7,475 1860 23,771 



3,319 1851 8,589 1861 30,493 



3,87711852 11,02711862 31,769 



4,174 I 1853 13,497 1 1863 32,471 



4,311 1854 15,672|1864 3.3,800 



4,i22|l855 17,398 1865 33,442 



