XX CONTKNTS. 



BOTANY. 



GENERAL., 

 Including- the Anatomy and Physiology of Seed Plants. 



Cytology, 

 Including- Cell-contents. 



PAGE 



Gdilliermond, A. — Origin of Chromoplasts a7id Pigment-formation „. .. • 231 



Gtjilltekmond, A. — Chondriomes of the Tulip 402 



Haas, A. R. — Beaction of Plant Protoplasm 597 



Hill, J. B. — Staining of Microscoinc Organisms 597 



Structure and. Development. 



Veg-etative. 



Lloyd, F. E. — Abscission in Mirahilis 136 



Baker, R. T. — Australian'^ Grey Mangrove" 136 



Roberts, Edith A. — Epidermal Cells of Boots .- 231 



Daniel, J. — Concentric Xylem in DicoUjledons , .. .. 232 



Hutchinson, A. H. — Morphology of Keteleeria 597 



Reed, E. L. — Leaf Nectaries of Gossypium 598 



Daniel, L. — Wounding and Regeneration of Plants .. .. 598 



Stobek, J. P. — Summer and Winter Leaves 599 



Keproductive. 



Barthelat, G. — Floral Pedicel of Mesembryanthemum 137 



GooDSPEED, T. H. — Parthenogenesis, Parthenocarpy, and Phenospermy in Nicotiana 137 



Vuillemin, P. — Anomalies in Linaria , 138 



Baranow, P. — Embryo-sac Development 232 



"Wallis, T. E. — Structure of Pepper 233 



Sax, K. — Fertilization in Fritillaria pudica 312 



DuPLER, A. W. — Gametophytes of Taxus canadensis 599 



Wenigeb, W. — Embryogeny in Euphorbia 600 



Physiolog-y. 



Nutrition and Growth. 



Kenoyer, L. A. — Environment and Nectar Secretion 600 



Irritability. 



Hooker, Henry D. — Mechanism of Movement in Drosera rotundifolia 600 



General. 



Surface, F. M. — Inheritance of Characters in Oat-Breeding 403 



