CHAPTER II. 

 SOME FEATUEES OF OAK GALL GROWTH. 

 The Common Origin : The CA]\rBiuM Region. 



I. Duration of G-rowth : 



(a) Rapid; a few da^^s. (b) filoiv ; several 

 months. 



II. Positions Oc(;uriED : 



(a) Boot, (b) Sfem. (c) Leaf, (d) Fhnre/)\ 



III. Similarity of Gijovvth. 



IV. Dissimilarity of Shapes : 



(a) Globular, (b) Ovoid, (c) lieniforw. (d) 

 Lenticular, (e) Aherrations. 



V. Variations in Size, Texture, Colour : 



(a) Girth. (b) Length. (c) Succulent. (d) 

 Woodij. (e) Green, (f) Red. 



VI. Modifications in Development : 



(a) Due to Eternal Lifluences ; 



((/) Overcrowding, {h) Environment. 



(b) Lhie to Liternal Lijlnences ; 



(a) Parasites, {h) Inquilines. 



VII. Smell. 



Aail. Taste. 



The common origin of all vegetable galls is the 

 cambium layer, or region, of the plant. Unless the 



