309 
With reference to the growth of red oak in America, the afore- 
mentioned circular gives the following information :— 
“Red oak is best suited to porous, sandy or gravelly clay soils. 
In this requirement it is intermediate between the white oaks and 
Under normal conditions, Q. rubra grows from 70 to 90 feet 
high with a trunk diameter of from 2 to 4 feet, but it has been 
recorded up to 150 feet high with a diameter of 5 feet. 
Tae Corronwoop (Populus monilifera, Ait.).—The usefulness 
of the better grades of poplar wood for box-making and for paper 
pulp is such as to warrant extensive plantations of those kinds 
which grow rapidly and produce good timber. P. monilifera, or P. 
deltoidea as it is often called, is likely to prove one of the best of 
the species for it occupies an important place amongst American 
woods. “Circular 47,” of the Forest Service, U.S. Dept. of 
Agriculture, deals with the strength of packing boxes made from 
various kinds of wood, and of eight sorts mentioned for medium 
sized boxes and six sorts for large boxes, cottonwood was found to 
be the strongest. For small boxes cottonwood was second of eight. 
The kinds tried were cottonwood, red gum, yellow pine, New 
England white pine, Western hemlock, Western spruce, Michigan 
white pine, and North Carolina pine. 
Populus monilifera is widely distributed from Quebec, southwards 
through the Atlantic States to western Florida and westwar 
Alberta, along the Rocky Mountains to New Mexico. Like other 
poplars it is of rapid growth when planted on moist ground, and is 
an excellent tree for low ground which is subject to flooding. Its 
average height is given as from 75 to 100 feet and the diameter of 
the trunk as from 2 to 3 feet. The United States “ Forest 
furnishes a greater amount of wood in a given time than other , 
P. monilifera would need to be planted as a pure stand, or with 
spruce, on moist ground. It would probably grow on high, di 
ground, but it is doubtful whether it would ever prove a commercial 
ttings form the most satisfactory method of increase. 
i 
success. Cuttings et 
These may either be dibbled into permanent positions or be roo 
