internal improvements, 143 (See also railroads; 

 roads; Pennsylvania works) 



Jamieson, Alexander, 40 



Jervis, John B., 173, 174; locomotive of, 164 



John Bull (locomotive), 163 (illustr.) 



Jones, David, tools of, 29; mold maker, 107 



Jones, Thomas P., 15, 54; partner of Perkins, 12 and 

 n, 16, 22, 24; lectures in Peale Museum 16, 54; 

 on perpetual motion, 79-80 



Joule, James P., 66 



Kelter (papermaker), 95 



Kemble, Gouverneur, 46 n (See also West Point 

 Foundry) 



King, George, 106, 181 



King, Philip Jacob, 106 n 



Kneass, William, 38 



Lancaster (locomotive), 162 



Lancaster & Harrisburg Railroad, 163 



Lancaster Locomotive Works, 166, 171 



lathe, Spencer's, 13, 14 (illustr.), 136, 138; of Coleman 

 Sellers, 29-30; John White's screw-cutting, 

 3 I- 35) 35 (illustr.); of D. Wilkinson, 31; 

 of C. and O. Evans, 32; great wheel and spring 

 pole, 44, 45 (illustr.), 54; of Lukens, Mason 

 & Tyler, 15 n, 54, 57; copying (die sinking) 

 for mint, 71, 74, 77; unable to cut scroll 

 thread, 99; accident with, 107; at Cardington, 

 112, 160; in Maudslay shops, 112 (See also 

 slide rest) 



Latrobe, Benjamin H. (1 764-1820), 63; steam engine 

 report, 6 n; Evans on, 37, 38; drawing of, 41 



Latrobe, Benjamin H. (1806-1878), 37, 184, 190, 192 



Lawrenceburg & Indianapolis Railroad, 150 



leather fire hose (See fire hose) 



leather splitting machine, 185, 187 



Leslie, Charles, 110, 111, 124 



Linkfelter, Andrew, and hose, 8 



lithontriptor of Lukens, 52, 55 (illustr.) 



Liverpool &• Manchester railroad, 70, 134; 150 



locomotive (See also Rogers, Thomas) 



adhesion increaser, 172, 173 (illustr.), 178 

 Baldwin, 164, 174, 188; on Philadelphia & Co- 

 lumbia, 151, 156, 161, (illustr.), 172; half-crank, 

 162 (illustr.), 163; Lancaster, 162: wheel design, 

 165, 176, 177 (See also Baldwin, Matthias) 

 Boyden, Essex and Orange, 188-189 

 Campbell, 8-wheel, 152 

 Davis, York, 180; Arabian, 180-181, 183, 184-185; 



blower fan, 180 and n, 183 (illustr.) 

 De Witt Clinton, i64n 

 Hackworth, 163 



locomotive — Continued 



John Bull, 163 (illustr.) 



Norris, on Philadelphia & Columbia Railroad, 

 151, 156, 172; climbs Belmont incline, 152; 

 10-wheeler, 171 ; his first, 1 90-1 91 



Novelty, in Peale's Museum, 70 and n 



Puffing Billy, 1 84 



Sellers, grade-climbing, xvii; and mint work, 71 ; 

 in 1835, 151 n; design of, 162-166; boilers for, 

 164; tires for, 164-166; Sampson, 172; America 

 described, 172-175, 179 (illustr.); trial of. 

 177-178 



Stephenson, 70 n, 163, 167, 184; in 1832, 134; in 



'835, «5*> : 57, 162 



London, 104, 106, 109-133 passim 



Long, Stephen H., 190-192, 191 (portrait.) 



Low Moor Iron Works, 165 



Lukens, Isaiah, xvi, 15, 30; biogr. notes, 52; por- 

 trait, 53; his shop, 54-57; his slide rest, 54-55* 

 57, 58 (illustr.); introduces flat belt, 54; GES 

 on skill of, 55 n; and apprentices, 60; and 

 perpetual motion machine, 79, 81 (illustr.), 

 84-86; winds scroll-screw, 99; on screws, 121 



Lungren, William (millwright), 107 



Lyon, Patrick, biogr. notes, 2 and n; portrait, 3 and 

 5; and Philadelphia fire engine, 3, 7 (illustr.); 

 office of, 4; and Eckfeldt folding levers, 4, 19, 

 23, 70; and Diligent, 9 (illustr.), 22, 24, 44; 

 boring cylinders, 35; on Sellers and Pennock 

 engines, 44 



machine tools (See under boring; lathe; planing 

 machine; punch press) 



Maidstone, Kent, GES visits paper mill in, 128-130 



Market Street store, xvi, xvii, 28 (illustr.), 29, 30, 43, 

 46, 5 1 . 8 9 



Marshall saw mill, L'pper Darby, Pa., 107, 160 



Mason, William, xvi, 77; teaches drawing, xv, 40, 

 54; on annealing, 15; biogr. notes, 15 n; 

 GES on, 55 n; slide rest 59 (illustr.); and 

 Redheffer, 84 (See also Baldwin and Mason) 



Mason and Tyler (firm), 40, 55 n 



Mathews of London (wire worker), 104; introduces 

 GES to Dickinson, 106; mentioned, 94 n, 107 



Maudslay, Henry, 74; slide rest, 44, 54, 56 

 (illustr.), 107; milling cutter, 100 n; biogr. 

 notes, 108-109; his tools, 1 1 1 ; and screw stand- 

 ards, 1 2 1 



Maudslay Sons and Field (firm), 88; origin, 108-109; 

 GES visits, 1 1 1-1 12, 114 



Mease, James, 15, 40 n 



198 



