IVrORTALlTV OF WHITK-PINK AND RKD-PINK PLANTATIONS 309 



The two-year seedlings were obtained from the New York State Con- 

 servation Commission. 



Grades 



The four-year transplants of white pine were divided into three 

 grades — called A, B, and C — according to size and quality. The arbi- 

 trary basis for grading this stock was principally by size, though due 

 allowance was made for its physical condition. The sizes of the grades 

 and the ranges of root lengths corresponding to these heights are as 

 follows : 



Grade Ilt-ight Root lengtli 



Inches Inches 



\ over 8 14 -23 



B 5-8 II. 5-16 



C under 5 9 -13 



In grading the three-year red pines only two classes were distin- 

 guished. Grade A included those of four inches and over in height and 

 the most thrifty in condition. Grade B included all others whose height 

 at that time was less than four inches or in a less thrifty condition than 

 Grade A, though almost as tall. The root lengths of Grade A varied 

 between six and ten inches. In Grade B the trees were generally be- 

 tween five and eight inches in root length. 



Only one grade of 2-1 stock^ of white pine was planted ; this stock 

 was all poor and scarcely justified a division into grades. Most of this 

 stock had suffered from delay in transplanting in 1914 on account of 

 weather and soil conditions and came from transplant rows which in 

 every case showed a heavy mortality. The average height of these 

 trees was close to five inches, with a root length averaging from five to 

 seven inches. 



Care of Stock 



On .\pril 12 the four-year-old white pines and the three-year-old red 

 pines were removed from the transplant rows, graded and heeled in at 

 the nursery. They remained there until the morning of April 14. when 

 they were carefully packed for transportation to the site of the experi- 

 mental plots. .\t this place they were again heeled in until set out in 

 the plots. Two days later, .April 16, Grades A and B of the 2-2 white- 

 pine stock were planted. ( )n April 17 Grade C of the white pirn- and 

 A and B of the red pine were planted. 



The 2-1 white pines were dug and heeled in at tlie nursery on A|>ril 



*2-l stock, two yc.'irs in scecll)C(l, one year in transplaiu rows. 2-2 stock, two 

 years in secdlxd and two years in transjilant rows. 



