viii LIST OF PLATES. 



Facing page 



XXXril. I^ev^ton's Opticas a704) : title of the first edition 162 



XXXIV. Ortega's Arismetica j Geometria (1552) : woodcut title .... 170 

 XXXV. Ovenden's Description of a Machine to travel without Horses (1774) : plate 



illustrating a forerunner of the bicycle 171 



XXXVI. Pacioli's Summa de Arithmetica (1494) : specimen of text . . . . 172 



XXXVII. Porta's Spiritali (1606) : specimen of text loith zuoodcut of his steam-engine . 181 



XXXVIII. Ramelli's Diverse et Artificiose Machine f 1588) : 5/>ecmew^/«<e . . 189 



XXXIX. Rathborne's Surveyor (1616) : engraved title showing surveying instruments 196 



XL. Recorde's Castle of Knowledge (1556) : first page of text with large luoodcut 



initial 200 



XLI. RoNALDs's Description of an Electrical Telegraph (1823) : specimen plate, 



illustrating the first practical electric telegraph apparatus .... 201 



XLII. Saltonstall's Navigator (1636) : 4 specimen 'pages of text, etc. . . . 206 



XLIII. Sacro Bosco's Sphsera Mundi (1526): ?^oo6ZcM^ ^e'^/e 211 



XLIV. Scrott's Mechanica Hydraulico-Pneumatica (1657) : title, and plate showing 



his air-pump 217 



XLV. Stevinus's Beghinselen der Weeghconst, etc. (1586) : title, and 3 sjyenimen 



pages of text 2vith woodcuts ... ...... 232 



XL VI. Stewart's Description of a Machine (1767) : plate showing the first machine 



converting rectilinear into rotary motion 233 



XLVII. Tagliente's Considerando . . . (1525) : title and specimen page of the earliest 

 cojnplete ivorh on bookkeeping. 



Lo presente Libro . . . (1525) : engraved title and plate of one of the 



earliest works on calligraphy ......... 248 



XLVIII. Tournachon's A Terre et en I'Air (1864) : 3 /j/«^e« showing his self-feeding 



balloon 249 



XLIX. Portrait of Torricelli by Anichini ' . 250 



L. Valturio's de Re Militari (1532) : specimen of text loith large woodcut of a 



curious cannon ............ 254 



LI. ViTRUVius. De Architectura (1567) : specimens of 4 illustrations of water- 



ivheels and a mill . . 259 



LII. Wagenaer's Mariner's Mirror (1588) : engraved title 263 



LIII. WiLKiNs's Mathematical! Magic (1648) : 4 specimens of text and illustrations 264 



LIV. Worcester's Century of Inventions (1663) : title and 3 specimens of text . 280 

 LV. Zonca's Novo Teatro di Machine (1607): plate shoioing his sii)hon for 



perpetual motion 281 



LVI. Portrait of Dr. Thomas Young 284 



LVII. Agricola. De Re Metallica (1556) : title and 3 specimens of illustrations . 285 

 LVIII. ApfANus. Cosmographia (1550): title, specimen illustration, and map 



shoioing America 300 



LIX. Instrument Buch (1533): title with large woodcut, showing astro- 

 nomical instruments 301 



LX. Blundeville his Exercises (1597) : title and 3 sub-titles with woodcuts . 320 



LXI. BoETHius. Arithmetica (1488): ^rs^ /ea/o/^^.r^ 321 



LXII. BoRGo's Libro de Abacho (1484 and 1488) : 4 specimens of text of the first 



and second editions 328 



LXIII. Bourne's Inventions or Devices (1578) : title and three specimens of text . 329 



LXtV. Portrait of the Hon. Robert Boyle, F.R.S 316 



LXV. Bradwardine's Geometria Speculativa (1495): specimen of text \cith geo- 

 metrical figures 317 



