DR. ANGUS SMITH ON PEAT. 341 



o 

 Summer oak wood i - i8 



Birch wood 095 



White pine wood 0*72 



Alder 0*65 



Linden o*6i 



Red pine o'6i 



Poplar 0*50 



Karmarsch's Heating-power by bulk (p. 96). 



cub. ft. cub. ft. 



100 of turf j peat, on the average = 33 of pine- wood in stubs. 

 „ fibrous ,, 90 „ 



earthy „ 145 



pitchy „ 184 



Waste space in peat and wood as usually piled not far 

 from 40 per cent. 



Karmarsch's Absolute Heating effect (p. 96) . 



100 lbs. of turfy air-dried peat, on the average = 95 lbs. of pine wood. 

 „ fibrous „ 108 „ 



„ earthy „ 104 



„ pitchy „ in 



According to Brix the weight per cord and relative 

 heating effect of several air-dried peats, the heating power 

 of an equal bulk of oak wood being taken at ioo as a 

 standard, are as follows, bulk for bulk : — 



Weight Heating 



per cord. effect, 

 lbs. 



Oak wood 4 x 5o 100 



Peat from Linum, first quality, dense and 



pitchy 340° 70 



Peat from Linum, second quality, fibrous... 2900 55 



„ third quality, turfy 2270 53 



Peat from Biichsenfeld, first quality, pitchy, 



hard, and heavy 34°o 7 1 



Peat from Biichsenfeld, second quality ... 2730 64 



Sanitary Effect. 



One of the most important purposes for which the 

 growth of peat may be used is the conversion of the un- 



