-- 258 — 



Nature of gall-producing- stimili. 

 Insect galls. 



On lovver plants. 



Rootgalls. - Stem galls. - Leaf t,ralls. — Galls on floral organs. - Oalls madc by 

 particular insects. 

 Fungus galls or mycodomatia. — Root tubercles. - Tubers and tuheri/ation. 

 Anatomical studies of galls. 

 Galls on particular plants. 

 Galls of particular geographical areas. 



Teratology. 

 General. 



Philosophy. 

 Compends, treatises. 

 Bibliography. 

 Collected works. 



Abnormalities of particular plants. 

 Union of organs, cohésion, adhésion. 



Abnormal fusions of thalloid structures. 

 RhizocoUesie or rootgrafts. 

 Natural grafts, union of steni.^. 

 Onion of leaves, syncotyls. 

 Apogamy and parthenogenesis. 

 Sexual reproduction. 



Philosophy, terminology, etc. 

 Differentiation of sex. 

 Alternation of générations. 

 Festilization. 



Pollination. — Effets of self and cross-fertilization. ~~ Anemophily. — Entomo- 

 phily. Adaptations to other agents. Dichogamy. — Heterogenous dimor- 

 phism and trimorphism. — Diclinism ; Monoecism ; Polygamy. — Other 

 means of insuring cross pollination. - Cleistogamy. — Other adaptations 

 to self-pollination. 

 Artificial control of pollination, plant breeding. 

 Pollination in particular species or groups. 

 Other nuclear fusions. 



Sexual reproduction in particular species. 

 Viviparity. 

 Régénération. 



Movement. 

 Physical. 



Stability, rigiditv. — Elasticity. - Turgidit\ . Tensions. - Hvgroscopic movc- 



ments. — Other physical movement s. 

 Anatomic movements. 

 Mutation. 



