2^2 TRANSACTIONS OF ROVAL SCOTTISH ARBORICULTURAL SOCIETV. 



Brought forward 

 Subsidiary branches — {on/y tico measurable as 



timber : both well shaped). 

 I : length lo' ; mid-girth i' i": volume 

 2: length 9'; mid-girth 1' i"; volume 



Total volume of timber in branches 



including bark .... 



Deduct — say to per cent, for bark (see 



Schlich, vol. iii. p. 34) • 



Xet volume of timber in branches, free of 



bark (so far as measurable) 



Total net volume of timber, free of bark, 



—standard cub. feet ..... 325"75 



which represents about 244 cub. feet by the Quarter-Girth 

 system of measurement. J. J. R. M. 



Investigation inio the Current Annual Increment 



IN (llRTH or THE DoUGLAS FiR. 



The West of Scotland Agricultural College, Glasgow, has 

 issued, as Bulletin Xo. 59 of 1912, a report by Professor J. 

 Nisbet, D.CE.c, on his investigation into the current annual 

 increment in girth, at 5 feet above ground, of a Douglas 

 fir plantation, 32 years of age, in the Quarries Wood on 

 the Benmore Estate, Kilmun, Cowal district of Argyllshire, 

 during the year 191 1. 



The original girth measurements were made on ist May 

 191T, and the trees were re-measured on 17th February 1912. 

 It is hoped that this important investigation may be prolonged 

 over a series of years, as the interval of 9^, months appears 

 to be too short a period to permit of trustworthy deductions as 

 to annual increment being made from the rate of development 

 of the trees. 



Appointment. 



Mr J. D. Crozier, forester on the Durris estate, Aberdeen- 

 shire, has been appointed Forest Inspector under the Depart- 

 ment of Agriculture and Technical Instruction for Ireland. 



