366 SECTIONAL TRANSACTIONS.—K. 
2. Mr. Fraser Srory.—Economic Advantages of a Periodical Census of 
Woodlands. 
In spite of the extensive use of substitutes the demand for timber increases year 
by year, and it is now recognised that this country should become less dependent 
than hitherto on foreign supplies. It is essential, therefore, that a stocktaking of 
British forest resources should be undertaken periodically. 
Information of a statistical character was lacking when the Forestry Commission 
was established in 1919, but considerable attention has been given to the subject since 
that year. Bulletins have been published on the rate of growth of the principal forest 
trees, and two inquiries are nearing completion, viz. a census of woodlands and a 
census showing the quantity and value of home-grown timber used. These inquiries, 
when complete, should enable us to see how Britain stands as compared with other 
countries in respect of total area of woodlands, the proportion imported timber bears 
to the amount produced at home, the distribution of woods throughout the country, 
and the character and composition of the woods. 
3. Mr. ALEXANDER Howarp.—Present and Future Supplies of Timber. 
AFTERNOON. 
Visit to the wharves, timber yards, and mills of Messrs. W. W. 
Howard Bros. & Co., Northam, Southampton. 
Friday, August 28. 
Mornine. 
4, Dr. M. Witson.—Some Seedling Diseases of Conifers and their Control. 
There is very considerable loss of seedlings and young plants in forest nurseries 
as the result of fungal attack, and experiments are being carried out in order to dis- 
cover the best methods of treatment for the prevention of these diseases. 
‘Damping off’ caused by Rhizoctonia sp. and Fusarium sp. frequently occurs in 
young seedlings, especially in the case of Douglas fir, and has also been met with in 
Scots pine, larch, and Sitka spruce. Treatment with ‘ Cheshunt Compound ’ has been 
found of value. 
Botrytis cinerea causes considerable damage especially to Douglas fir, and is also 
found on Sitka spruce, larch, and other species. Treatment with ‘Cheshunt Com- 
pound ’ has been found to be effective. 
Meria laricis caused considerable damage on European larch during the summer 
of 1924, and is still more abundant during the present season. It appears to be 
spreading rapidly. The disease attacks both seedlings and transplants; Japanese 
larch and the Dunkeld hybrid larch appear to be immune. Treatment with various 
sprays is being carried out. 
Keithia thujina has been found attacking Thuja, especially in the west of England 
and Scotland. 
Lophodermium Pinastri on Pinus spp. and L. Abietis on Norway and Sitka spruce § 
Coleosporium senecionis was particularly abundant on Corsican pine during the 
early summer of 1925. It was also found on Scots pine. 
The oak mildew is widespread and seriously weakens oak seedlings. It has also ~ 
been found on beech seedlings. Treatment with ammonium polysulphide and lime 
sulphur is being carried out. 
Phomopsis Pseudotsuge has been found attacking Douglas fir in several nurseries. — 
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cause considerable damage. . 
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Phoma dura has also been found on Douglas fir. Z'helephora laciniata has been found — 
in several nurseries growing over the soil surface and damaging seedlings. 
‘Stem girdle’ disease has been found on Douglas fir, Scots pine, and larch. This _ 
does not appear to be the result of fungal attack. 
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5. Mrs. N. L. Aucocr.—Successional Disease of Willow. é 
Willow scab, Fusicladium saliciperdum, Tubeuf., causesa die-back in first year wood, : 
forming pustules analogous to those in which the fungus of apple scab over-winters. 
