So6 SECTIONAL TRANSACTIONS.— K. 



Dr. M. R. Brown. — Physiologic races of Puccinia coronata-avence. 



Dr. A. BuRGES. — Sporotrichium infection by rats. 



Dr. D. G. Catcheside. — Genetics of Oenothera. 



Dr. V. J. Chapman. — Marine algae. 



Dr. C. G. C. Chesters. — ^A simple method of producing photo- 

 micrographs. 



Dr. W. R. IviMEY Cook. — Species of Plasmodiophorales. 



Dr. C. G. DoBBS and Mr. A. M. Acock. — Plants of Spitzbergen. 



Dr. W. J. DowsoN. — i. Some bacterial diseases of plants. 2. 

 Cultures of bacterial plant pathogens arranged in group-genera. 



Dr. R. Emerson. — Methods of reproduction in the Blastocladiales. 



Dr. R. Florin. — Female fructifications in Cordaites and conifers of 

 Palaeozoic Age. 



Dr. H. Godwin. — Bog peat. 



Prof. W. T. Gordon. — Tetrastichia bupatides. 



Dr. B. J. Grieve. — Investigations of stimulation phenomena in plants 

 induced by parasitic infection. 



Miss E. M. Halley. — Myxomycetes. 



Miss D. Joan Heppell. — The cytology of Narcissus. 



Herbarium, Cambridge. — i. Local floras. 2. Collections of special 

 interest. 3. Plants from localities to be visited on the excur- 

 sions. 



Prof. B. J. LuYET. — Vitrification of colloids and of protoplasm. 



Mr. G. Metcalfe. — Watermarked willow wood. 



Miss E. Morgan. — Saprolegniaceas. 



Miss Helen M. Muggoch. — Dispersal of spermatocytes in Mnium 

 hornum. 



Prof. W. Neilson Jones and Mr. A. G. Morton. — Material illus- 

 trating some features of soil and growth on Wareham heaths. 



Dr. M. C. Rayner and Dr. I. Levisohn. — Pure cultures of fungi 

 associated with roots of Pinus ; Mycorrhizal relations in Sitka 

 Spruce and Chamcecyparis Lawsoniana. 



Dr. P. W. Richards. — Mosses with ' dwarf males.' 



Miss E. R. Saunders. — A century's challenge to orthodoxy. 



Mr. J. K. Scott. — A modification of the katharometer. 



Mr. G. O. Searle. — The Sandringham flax experiment. 



Sir Albert Seward, F.R.S., Mr. W. N. Edwards and Dr. J. B. 

 Simpson. — Interbasaltic plant beds of Mull. 



