XX CONi'ENTS. 



Pasre 



3. On Social Insects and Evolution. By Professor C. V. PaLEr 6tf9 



4. On the Role of Sex in Evolution. Bv Professor John Beert Hatceaft, 



M.D '. 691 



5. On the Relation of Mimetic Characters to the Original Form. Bv F. A. 

 DixEr,M.A., M.D ." G92 



6. *0n certain Principles of Proo:ressively Adaptive Variation ohserved in 

 Fossil Series. By Professor H. F. Osbokn (393 



7. On the AViug of Archseopteryx viewed in the Light of that of some 

 Modern Birds. By AV. P. Pycraft 693 



8. On the Nephridial Duct of Oicejiia. By Professor G. Gilsox^ 693 



Departmext of Botany. 



1. On the Origin of the Sexual Organs of the Pteridophytes. By Professor 

 Douglas 11. Campbell '. .". 095 



2. Notes upon the Germination of the Spores of the Ophioglosseae. By 

 Professor Douglas II. Campbell ". 695 



3. On Sterilisation and a Theory of the Strobilus. By Professor F. O. 

 BowEE, F.R.S \ 695 



4. *0n a Method of taking Casts of the Interiors of Flowers. By Miss N, F. 

 Latard 696 



6. *0n the Function of the Nucleus. By Professor E. Zaciiarias 696 



6. *Exhibition of Diagrams. Bv Professor Leo Erreea 696 



TUESDA Y, A UG UST 14. 

 Department of Zoology. 

 i. On the Blood of ilfaf^e^onre. By W. B. Benham, D.Sc 696 



2. Suggestions for a New Classification of the Polychata. By "\V. B. Bex- 

 ham, D.Sc 696 



3. *0n Museum Preparations. By E. S. Goodrich 697 



4. On liandom Publishing and Rules of Priority. By Thomas R. R. Sxeb- 

 BiNG, M.A 097 



5. "On the Relations of the Cranial Nerves to the Sensory Canal System of 

 Fishes. By AV. E. CoLLiNGE 698 



6. *0n Some Models of the Crania of Siluroids. By H. B. Pollard 698 



7. On the Epidermis of the Plantar Surface and the Question of Use-inheri- 



tance. By F. A. DiXEY, M.A., M.D 698 



Department of Botany'. 



1. *0n Pachytheca. By G, Murray 698 



2. *The Structure of Fossil Plants in its bearing on Modern Botanical 

 Questions. By Dr. D. H. Scoir, F.R.S 698 



3. *0n a Thames Bacillus. By Professor II. Marshall AA'ard, F.R.S 698 



4. *Influence of Light on Diastase. By Professor J. R. Green QdS 



5. *A Contribution to the Geological History of Cycads. By A. C. Seward 693 



