300 



KETHOD OF VALUING CROWIXG TIMBES, 



It should be 

 employed in 

 dififerent 

 modes. 



must be allowed, at least, to have had the effect above 

 explained : that of relieving the heart and arteries from h 

 great part of their exertion in propelhng the blood, and 

 mat/ therefore have contributed to the cure b)' this means 

 only. 



The different modes above mentioned are adapted from 

 their nature to different degrees of bodily strength ; and if 

 there are cases, in which that which appears most eligible 

 may not suit the situation or circumstances of the patient, 

 it can not be difficult to contrive other means of giving 

 motion, so as least to incommode, and yet to give the 

 greatest relief, A very gentle and long continued, or even 

 incessant motion, may suit some cases better than any 

 more violent and occasional agitation; and in this way, 

 Sea voyages, probably, it is, that sea voyages have sometimes been 

 attended with remarkable advantage. 



VIII. 



Method of nscertaining the Value of Growing Timber Trees, 

 at different and distant Periods of Time. By Mr. Charles 

 WaistCll, of High Holborn. 



("Concluded from p. 193.y 



Observations respecting Trees of different Lengths in the 

 Bole, 



Ti 



Increase of JL REES that increase annually 12 inches in height and 



rentlengtlisof one in circumference, and have boles of different lengths, 



bole at diffe- these boles, if of the undermentioned lengths, increase after 



the rate of 5 per cent per annum at the ages and heights 



under-mentioned, and they measure as under, viz. 



Contents. 

 Years old. In. Ft. Ft. in. p. 



Trees with 12 feet boles at 46 their girt 10 at 6 high, 8 4 

 Do. 16 do. 48 do. 10 at 8 do. 11 1 4 



Do. 24 do. r,2 do. 10 at 12 do. 16 8 



Do. 32 do. 5t) do. 10 at 16 do. 22 2 Sr 



Do. 40 do. 60 do. 10 at 20 do. 27 9 4 



i>0. 4.S do. t)4 tlo. 10 at 24 do. 32 4 



■\Vi\atever 



