C. R. Pettis, Photo. 



COMPARATIVE GROWTH OF TWO-YEAR OLD WHITE PINE SEEDLINGS. 



10UP 4 THE SIZE WE GREW IN IQ03, GROUP 3 IN IQo6 AFTER SOIL EXPERIMENTS, GROUP 2 WHAT WE ARE GROWING NOW AFTER FURTHER 

 EXPERIMENT, AND GROUP I INDICATES SIZE OF SEEDLINGS THE BEST COMMERCIAL NURSERIES ARE GROWING. 



FOREST EXPERIMENT STATION, SARANAC INN, N. Y. 



C. R. Pettis, Photo. 



