1909.] 



NATURAL SCIENCES OF PHILADELPHIA. 



87 



buds eased February 3 ; leaf buds burst February 5 ; first leaf unfolded 

 February 7; first leaf withered February 11; all leaves withered 

 February 21. 



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

 February 5. 



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

 January 31; leaf buds burst February 3; first leaf withered February 

 8; flowers buds buret January 25. Lansing, Michigan: Leaf buds 

 burst February 1 ; flower buds eased January 27. 



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

 January 30 ; leaf buds burst February 1 ; first leaf unfolded February 

 4; first leaf withered February 7; all leaves withered February 8. 

 Lansing, Michigan: Leaf buds eased January 30; first leaf unfolded 

 February 3 ; flower buds burst January 29 ; flowers closed January 29 ; 

 flowers open January 31 ; all flowers withered February 5. 



Hydrochloric Acid (strong). — Storrs, Connecticut: Leaf buds eased 

 February 1; leaf buds burst February 4. 



Acetic Acid (weak). — Storrs, Connecticut: Leaf buds eased February 

 3; leaf buds burst February 4; first leaf unfolded February 8; first 

 leaf withered February 8; all leaves withered February 11. 



Nitric Acid (weak). — -Storrs, Connecticut: Leaf buds burst Feb- 

 ruary 5. 



Chromic Acid (weak). — Storrs, Connecticut: Leaf buds eased Feb- 

 ruary 1; leaf buds burst February 3; first leaf unfolded February 7; 

 all leaves unfolded February 8. 



Water. — 



Pear (Flemish Beauty). — 



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

 February 1; first leaf unfolded February 4; all leaves withered Feb- 

 ruary 14. Lafayette, Indiana: Leaf buds eased February 3; leaf 

 buds burst February 5; first leaf unfolded February 8; all leaves un- 

 folded February 11; all leaves withered February 14. 



