TABLES 



NO. , PAGE 



I. Length of tracheids in coniferous woods .... 17 



II. Length of wood fibres in dicotyledonous woods . . . .20 



III. One hundred and fifty trees of the United States arranged in the 



order of the average specific gravity of their dry woods . . 50 



IV. Shrinkage of wood along different dimensions . . . .57 



