^6 



Teachers, a vvortl of advice to, 208. 

 Thinning, attention to, reduces Pruning, Ipg. 



- general observations on, 199, 203. 



Timber decreasing in Quantity, 11. 

 ' apparently strong, weak in fact, 59* 



. M. . knotty, proper application of, 6l. 



■ seasoned by Boiling, 173. 

 Training applicable to ornamental trees, 211. 



of short Stems, with flat Heads, 212. 



' conic Heads, 214. 



spiral Heads, 214. 



two or more Heads from one stem, 213 



. two Heads, one above the other, 214. 



Trees, their importance, 4^. 



clear of knots, grow tall, 58. 



— — singular opinions respecting, 78. 



good form of, prolongs their lives, 123. 



Ivy-bound, 144. 



. enlargement of, how demonstrated, 144. 



— - when in a state of nature, 149. 



■ their natural forms knotty, 153. 



. their internal structure described, 153. 



. the best forms of, grow quickest. 164. 



sorts of, proper for Underwood, 190. 



. weak, method of invigorating, 219. 



■ top-heavy, method of cure, 220. 



