FOREST TREES. 167 
allowed to remain another year. ‘Larches are almost 
uniformly thinned the first year, and are all removed 
the second year. 
It may be proper here to remark, that so much care 
and skill are requisite to raise Conifers from seed, and 
the uncertainty of success on the part of a novice so 
great, that it is cheaper for planters generally to buy 
of those who make their propagation a business, than 
to attempt to grow them themselves. 
The following table, for which I am under obliga- 
tions to Mr. R. Douglas, shows the number of seeds 
in a pound of twenty species of Coniferous trees. It 
was the result of several weighings of each kind, and 
the variation was very trifling, except in the Larch 
and Pear seeds. One-fourth to two-thirds of Larch 
seeds are abortive, and the more perfect the seeds 
the fewer in a pound. 
Abies Nordmanniana, Nordmann’s Fir 8,000 
Abies pectinata, Common Silver Fir - 8,000 
Abies pichta, Siberian Silver Fir - - 40,000 
Abies Fraseri, Fraser’s Balsam Fir - 45,000 
Abies Canadensis, Hemlock Spruce - 100,000 
Abies balsamea, Balsam Fir - - 33,000 
Abies excelsa, Norway Spruce - - 58,000 
Abies alba, White Spruce - - - 160,000 
Cedrus Atlantica, African Cedar - - 7,000 
Pinus Cembra, Cembran Pine - - 2,700 
Pinus strobus, White Pine - - - 20,000 
Pinus Austriaca, Austrian Pine - 28,000 
Pinus sylvestris, Scotch Pine - - 69,000 
