1909.J 



NATURAL SCIENCES OF PHILADELPHIA. 



85 



Acetic Acid (strong). — New Brunswick, New Jersey: Flower buds 

 eased January 29. 



Chromic Acid (strong). — New Brunswick, New Jersey: Leaf buds 

 burst February 3; flower buds burst January 29. 



Water.— 



Pear (Bartlett). — 



No response was observed in twigs from stations as follows : . Geneva, 

 New York, twigs in strong corrosive sublimate; New Brunswick, New 

 Jersey, twigs in strong copper sulphate; Storrs, Connecticut, twigs 

 in copper sulphate (weak), and in weak ammonium oxalate; Lansing, 

 Michigan, twigs in weak sodium bicarbonate. 



Corrosive sublimate (weak). — Storrs, Connecticut: Leaf buds eased 

 January 31; leaf buds burst February 4; first leaf unfolded February 

 7 ; first leaf withered February 1 1 . 



Copper sulphate (weak). — Amherst, Massachusetts: First leaf un- 

 folded February 5; first leaf withered February 11. 



Sodium chloride (strong). — New Brunswick, New Jersey: Leaf bud 

 burst February 7. 



Sodium chloride (weak). — Storrs, Connecticut: Leaf buds eased 

 February 1; leaf buds burst February 5. Lansing, Michigan: Leaf 

 buds burst January 31; first leaf unfolded February 4; all leaves 

 withered February 24; flower buds eased January 29; flower buds 

 burst February 3; flowers closed February 13. 



Potassium chloride (weak). — Storrs, Connecticut: Leaf buds eased 

 February 4; leaf buds burst February 5. Lansing, Michigan: First 

 leaf unfolded February 3. 



Sodium bicarbonate (strong). — University of Pennsylvania: Leaf 

 buds eased February 4; leaf buds burst February 5. 



Sodium bicarbonate (weak).— Amherst, Massachusetts: Leaf buds 

 eased January 21 ; leaf buds burst February 3. 



Potassium bisidphate (weak). — Lansing, Michigan: Leaf buds eased 



