FORESTRY SECTION IN SCOTTISH NATIONAL EXHIBITION. 77 



13. Detailed Report on the Forestry Section in the 

 Scottish National Exhibition, Edinburg-h, organised 

 by the Royal Scottish Arboricultural Society, ist 

 May to 31st October 1908. 



{With Plate.) 



By Alexander M'Rae, the Society's Attendant. 



Taking the exhibits in the order given in the last issue of the 

 Tratisaciwns (Vol. XXI. p. 217), we shall deal first with specimens 

 illustrating the rate of growth of trees. 



Mr W. Steuart Fothringham of Murthly sends a fine 

 transverse section of Douglas fir showing 58 annual layers, and 

 measuring about 4 feet in diameter, as well as a compact section 

 of Cedar of Lebanon showing 82 layers, and measuring over 

 3 feet. The Earl of Mansfield's exhibit comprises five sections 

 of larch varying from 60 to 100 years old, grown on a variety 

 of soils, at elevations of from 180 to 11 00 feet above sea-level. 

 The largest specimen gives a diameter of 4 feet, and the quality 

 is excellent. The Earl of Mansfield also sends a fine section 

 of cedar grown at Kenwood, and measuring about 4 feet in 

 diameter; Scots fir, 120 years old, about 3 feetj and Menzies 

 spruce, 55 years old, grown at 320 feet elevation, and measuring 

 about 3^ feet. The Earl of Strathmore shows a section of 

 Douglas fir 35 years old, with a diameter of nearly 3 feet. The 

 annual rings are here very distinct. 



Mr R. C. Munro Ferguson, M.P., exhibits from Raith cross 

 sections of Wellingtonia gigantea, larch and Weymouth pine ; 

 also an interesting set of specimens showing the relative growth 

 of larch and Scots fir, Douglas fir and Norway spruce, as they 

 appear in the forest at 20 years of age. From Novar he shows 

 a fine section of larch 4^ feet in diameter. This tree was felled 

 in 1904 and realised ;^2o. He sends also a section of Scots 

 fir of fine quality, taken from 18 feet up the tree. 



The Duke of Atholl exhibits a fine section from one of the 

 parent larches at Dunkeld, which measures about 7 feet in 

 diameter. This tree was planted in 1738, and when measured 

 in 1888 the height was 102 ft. 4 ins., the circumference at 

 3 feet up 17 ft. 2 ins., and the cubic contents over bark 648 feet, 

 without bark 532 feet. The section shows 160 very distinct 

 rings, and is a fine object-lesson in annual increment. It has 



