CONTENTS. XXVll 



Page 



2. *Contribution to the Life History of Eanunculus. By Professor Coulter 862 



3. On the Distribution of the Native Trees of Nebraska. By Professor 

 Chaeles E. Besset 862 



4. The Vegetation Regions of the Prairie Province. By Roscoe Pound and 

 Feebeeic E. Clements 863 



5. The Zonal Constitution and Disposition of Plant Formations. By Eeedeeic 



E. Clements 863 



6. The Transition Region of the Caryophyllales. By Fredeeic E. Clements 864 



7. Note on Pleurococcus. By Dorothea F. M. Pertz 864 



MONDAY, AUGUST 2Z. 



1. Antherozoids of Zamia integrifolia. By Herbert J. Webber, M. A 864 



2. *0n Diagrams illustrating tlie result of Fifty Years' Experimenting on 

 the Growth of Wheat at Rothamsted, England. By Dr. H. E. Aem- 

 STEONG, F.R.S 865 



3. A Preliminary Account of a New Method of Investigating the Behaviour 



of Stomata. By Francis Darwin, F.R.S 865 



4. *Notes on Lilsea. By Professor Campbell 866 



5. *Lecture on Fossil Plants. By A. C. Seward, M. A 866 



6. *0n the Existence of Motile Antherozoids in the Dictyolacese. By J. L. 

 Williams 866 



TUESDAY, AUGUST 24. 



*Joint discussion with Section I on the Chemistry and Structure of the 

 Cell ; introduced by the reading of three Papers, viz: — 



' The Rationale of Chemical Synthesis. By Professor R. Meldola , F.R.S. 



*0n the Existence of an Alcohol-producing Enzyme in Yeast. By 

 Professor J. R Green, F.R.S. 



*The Origin and Significance of Intracellular Structures. By Professor 

 A. B. Macallum, Ph.D 866 



1. Further Observations on the Insemination of Ferns, and specially on 

 the Production of an Athyrioid Asplenium Trichomanes. By E. J. Lowe, 

 F.R.S 866 



2. On more than one Plant from the same Prothallus. By E. J. Lowe, 

 F.R.S 867 



3. Results in Experiments in the Cross-fertUising of Plants, Shruhs, and 

 Trees. By Wm. Saunders 867 



4. *0n a Hybrid Fern, with Remarks on Hybridity. By Professor J. B. 



' Farmer 868 



5. The Morphology of the Central Cylinder in Vascular Plants. By E. C. 

 Jeffrex 869 



WEDNESDAY, AUGUST 25. 



1. The Gametophyte of Botrychium virginianum. By Edward C. Jeffrey, 



B.A 870 



2. Remarks on Changes in number of Sporangia in Vascular Plants. By 



F. 0. Bower, F.R.S 872 



