THE TECHNOLOGIST. [March 1, 1864. 



68 THE SPECIFIC WEIGHT OF WOODS, ETC. 



Length in 

 Centimetres. 



Hornbeam {Carpinus betulus) 292 



Beech of Pi edmoat (Fagus sylvatica) .... 292 



Maple of Tuscany 294 



Hornbeam of Piedmont {Carpinus betulus) . . . 295 



Plane tree of Tuscany (Platanus hippocastanum) . . 300- 



Lignite of Piedmont 300 



Ailanthus of Tuscany 300 



Cherry of Piedmont (Cerasus) . . . . . 300 



Maple of Piedmont 300 



Arbre de Judee of Tuscany (Cercis siliquastrum) . . 300 



Hazel-nut (Corylus avellana) 301 



False acacia or locust {Robinia pseudacacia) . . . 308 



Black walnut (Juglans nigra) 311 



Fig-tree of Piedmont (Ficus carica) .... 317 



Apple of Piedmont 322 



Walnut \Juglans regia) 326 



Mulberry (Morus alba) 329 



Red walnut of Piedmont .... .337 



Lime of Tuscany (Tilia Europea) 341 



Cypress of Tuscany (Cupressus) 346 



Pear of Piedmont (Pyrus) moire ousatine . . . 348 



Walnut of Tuscany — reinee brune .... 349 



Alder of Tuscany (Alnus glutinosus) . . . 356 



Araucaria Cunninghami . 358 



Lierre of Tuscany (Oedera helix) 359 



Lime of Tuscany {Tilia Europea) . . . . 376 



Alder of Piedmont ( Alnus gluthiosus) .... 391 



Catalpa {Bignonia catalpa) 398 



Lime 407 



Bed alder of Piedmont 408 



White poplar (Popidus alba) 420 



Norway spruce fir (Pinus abies) 426 



Fir of Piedmont (Pinus abies) 444 



Stone pine (Pinus pinea) 445 



Poplar of Piedmont (Populus alba) 446 



Italian poplar of Tuscany (Popidus Italier) . . . 470 



Poplar 475 



Piedmont pine (Pinus abies) 484 



Tuscany pine (Pinus abies) 520 



American pine 569 



It will be seen that not only the same species but the same kinds 

 give results differing from each other, a fact happening nearly always 



