Bul. 974, U. S. Dept. of Agriculture. PLATE XIV. 
FiG. |.—WINTER CUTTINGS SHOWING PRIMARY GROWTH. 
The box is 10 by 12 inches by 8 inches deep, inside measurement. The new twigs have com- 
pleted their primary growth, their leaves have reached full size, and the formation of roots 
is about to begin. Secondary twig growth has not yet taken place. 
Fic. 2.—Box OF WINTER CUTTINGS SHOWING SECONDARY GROWTH. 
Most of the cuttings have put out and matured their strong secondary twigs. This condition 
of twig.growth is conclusive evidence that the cuttings are well rooted and that the box is 
ready for full ventilation. 
