168 The Principles of Fruit-growing. 



Populus grandidentata var. pendula May 12th, 2% in. ; June 

 29th, 17 in. 



Populus moniliferaMay 16th, 2 in.; June 19th, 6 in. 



Prunus nana May 16th, 3 in. ; 26th, 5 in. ; June 1st, 7 in. 



Prunus PissardiiM.ay 8th, 5 in. ; June 13th 10 in. 



Prunus serotinaMay 12th, 7 in.; 30th, 14 in. 



Prunus FirginianaMay 12th, 3 in.; 26th, 6 in. 



Pyrus Aucuparia May 3d, % in.; June 6th, 12 in. 

 *Pyrus Mains May 9th, 2 in. ; 26th, 8 in. 



Quercus alba May 12th, 2 in.; 18th, 6 in.; 26th, 13 in. 

 *Quercus tricolor May 9th, 2 in.; July 5th, 12 in. 



Quercus coccinea var. tinctoria May 12th, 1 in. ; June 13th, 

 7 in. 



*Quercus ilicifoliaMay 14th. 3 in.; June 6th, 13 in. 

 *Quercus imbricariaMay 12th, 2 in.; June 6th, 20 in. 



Quercus macrocarpaMay 16th, 4 in.; 20th, 6 in.; 25th, 

 12 in.; 30th, 13 in.; June 6th, 14 in. 



Quercus nigra May 12th, 5 in.; June 6th, 14 in. 



Bibes floridumMay 12th, 2 in.; June 6th, 12 in. 



Bobinia hispidaMay 18th, 2 in.; June 19th, 12 in. 



Bobinia PseudacaciaM.ay 12th, 1 in.; 18th, 2 in.; 26th, 

 3 in.; 30th, 4 in.: June 6th, 5 in.; 13th 6 in.; 20th, 7 in.; 

 29th, 9 in.; Jnly fth, 10 in. 



*Salix Babyloniea May 9th, % in.; 12th, 2 in.; 16th, 3 in.; 

 20th, 4 in.; 26th, 6 in.; June 1st, 12 in.; 13th, 16 in.; July 

 llth, 27 in.; 19th, 34 in.; 25th, 40 in.; Aug. 3d, 42 in. 



Syringa vulgarisMay 3d, 4 in.; 9th, 8 in.; 12th, 12 in.; 

 18th, 13 in. ; 26th, 14 in. 



Tilia Americana May 14th, 2 in. ; 18th, 3 in. ; 20th, 5 in.. ; 

 26th, 11 in.; June 1, 12 in.; 6th, 13 in. 



Vitis ripariaMay 14th, 1 in.; 30th, 15 in. 



3. Tillage should generally be stopped in late sum- 

 mer or very early fall. The tree has completed its 

 growth. It must now ripen and prepare for winter. 

 It can spare some of the moisture which comes with 



