SECTIONAL TRANSACTIONS.— K, K*. 425 



Vaccinium and the majority of the Ericaceae. The infection appears to be 

 confined to the roots, and has not been observed in stem, leaf, fruit or seed. 



The endophyte is not seed-borne, and seedlings are normally infected 

 from the soil several weeks after germination. 



Seeds have been germinated, and the resulting seedlings grown, in pure 

 culture, without the presence of the endophyte or of any other micro- 

 organisms. Such seedlings are capable of development, and can produce a 

 copious root system. 



Thus the relation of the higher plant to the endophyte is not an obligate 

 one. 



Mr. S. I. Ramanujam. — Chromosomes in the Oryzece. 



Dr. T. Swarbrick. — Relationships of scion and rootstock in fruit trees. 



Mr. G. E. Smith. — A developmental study of the epidermis. 



Prof. T. Harris. — Fossil horsetails. 



Dr. T. Johnson. — Dulichium spathaceum Pers. 



Dr. L. Dudley Stamp. — Land utilisation maps. 



Mr. F. T. Brooks, F.R.S. — Allomyces javanicus Kniep. 



Miss E. M. Debenham. — Some applications of the ammoniacal acidfuchsin 

 technique. 



Mr. J. W. G. Lund. — Mud-inhabiting algce. 



Dr. M. Pockock. — Stages in the life cycle of Volvox and other South 

 African algce. 



DEPARTMENT OF FORESTRY (K*). 

 Thursday, September 10. 



Mr. D. W. Young. — The New Forest (11.0). 

 Mr. A. P. Long. — Hill planting (11.30). 



Mr. J. A. B. Macdonald— The afforestation of difficult sites (12.0). 



To the ardent forester there are problems or difficulties connected with 

 the afforestation of every conceivable ' site ' or type of ground. Difficulties 

 may indeed result from the very fertility of the soil itself — for instance, weed 

 growth may be so encouraged that the planted trees are in danger of be- 

 coming smothered. The paper, however, deals with sites in which the 

 difficulty arises from the poverty or unfavourable physical conditions of 

 the surface layers ; attention is confined to hill sites. In such circum- 

 stances climatic perhaps more than edaphic factors are primarily responsible 



