350 



Growth of the Pine and Fir Tribe 

 h 



112 



boiler ; d d, stone pavement ; e e are pipes which go all round, 

 make an elbow joint, and return to the boiler ; yj", pipes which 

 go only once round ; g, waste-pipe ; h, lid of the boiler. 



This boiler is now stable and efficient, after seven years' trial, 

 whilst another apparatus, erected here by one whom you seldom 

 fail to praise, has been twice built, and ten times out of repair, 

 in one year. 



Isleworth, January^ 1836. 



Art. IV. On the Grotvth of the Pine and Fir Tribe in exposed and 

 stormy Situations. By John Nuttall, Tiltoun, Mount Kennedy, 

 County Wicklow. 



I HAVE observed that almost all the -^bietinse, when planted in 

 the wild grassy clay state and schistose soils of my property and 

 the adjacent lands, grow too fast (if I may so express it), or out of 

 proportion with their rooting, and become top-heavy and wind- 

 waved [waved, or blown about, by the wind, so as to lean to one 

 side] ; and also that those which, by accident or otherwise, had 

 lost their heads, took deep root, and quickly grew up healthy 



