CONTENTS. 



XV 



Influence of Warmth of the Soil on the Cell-formation of 



Plants Parti 70 



Growth of Starch-grains by Intussusception „ 70 



Collenchyma „ 71 



Epidermis of the Pitchers of Sarracenia and Darlingtonia .. „ 72 



Laticiferous Vessels „ 73 



Epidermal System of Roots „ 73 



Passage from the Root to the Stem .. .. „ 74 



Causes of Eccentric Growth .. . . . . „ 74 



Hydrotropism of Roots „ 74 



Cause of the Swelling of Root-fibres „ 75 



Frank's Diseases of Plants „ 75 



Free Cell-formation in the Embryo-sac of Angiosperms . . Part 2 214 



Fertilization of ApocynacecB „ 215 



Cross-fertilization and Distribution of Seeds ,, 215 



Swelling of the Pea ,, 216 



Aril of Ravenala , 216 



Structure and Mechanics of Stomata ,, 216 



Callus-plates of Sieve-tuhes '. „ 218 



Phyllomic Nectar Glands in Poplars „ 219 



Histology of Urtioaceai ^^ 219 



Structure of PodostemonacecB „ 220 



Pitchers of Cephalotus follicularis ,, 220 



Action of Light on Vegetation „ 220 



Production of Heat by Intramolecular Respi?-ation .. .. „ 221 



Physiological Functions of Transpiration ..... .. .. „ 221 



Metastasis „ 221 



Phosphorescence in Plants „ 222 



Transformation of Starch „ 222 



Occurrence of Allantoin in the Vegetable Organism .. .. „ 223 



Excretion of Water on the Surface of Nectaries .. .. „ 223 

 Determination of the Activity of Assimilation by the Bubbles 



given off under water „ 223 



Detmer's Vegetable Physiology ,, 223 



Chemical Difference between Dead and Living Protoplasm . . Part 3 361 



Occurrence of Aldehydes in Chlorophyllaceous Plants . . „ 361 



Organ not hitherto described in the Vegetable Embryo . . „ 361 



Studies of Protoplasm „ 362 



Composition of the Protoplasm of ^thalium septicum . . „ 362 



Properties of the Protoplasm in Urtica urens ,, 363 



Fertilization of Salvia splendens „ 363 



Reproductive Organs of Loranthaceos „ 363 



Structure and Mode of Formation of Spermatozoids .. .. „ 364 



Cell-nucleus in the Mother-cells of the Pollen of Liliacem . . „ 366 



Crystalloids in the Cell-nuclei of Pinguicula and Utricularia „ 366 



Cystoliths in Momordica , 367 



Sphero-crystals ,, 367 



Structure of Starch-grains ,, 368 



Assimilating Tissue ,, 368 



Fibrovascular Bundles of Monocotyledons „ 370 



