CHAPTER II. 
SOME FEATURES OF OAK GALL GROWTH. 
THe Common Oricin: Tae Camsrum Recion. 
I. Duration or Growre: 
(a) Rapid; a few days. (b) Slow; several 
months. 
IT. Posirions Occupixn : 
(a) Root. (b) Stem. (c) Leaf. (d) Flower. 
IIT. Sruinariry or Growve. 
TV. Dissimizartry or Swaps: 
(a) Globular. (b) Ovoid. (c) Reniform.  (d) 
Lenticular. (e) Aberrations. 
V. Variations in Sizz, Texturz, Cotour: 
(a) Girth. (b) Length. (c) Succulent. (a) 
Woody. (e) Green. (f) Red. 
VI. Monirications In DEVELOPMENT: 
(A) Due to Hvternal Influences ; 
(a) Overcrowding. (b) Environment. 
(8) Due to Internal Influences ; 
(a) Parasites. (b) Inquilines. 
VIT. Smet. 
VIII. Taste. 
The common origin of all vegetable galls is the 
cambium layer, or region, of the plant. Unless the 
