310 THE ESSEX NATURALIST. nology except medicine, and a card index to subjects containing nearly 2,000,000 references. As regards museums and the way in which they contribute to the advancement of the knowledge of science Sir Henry Lyons naturally had a good deal to say well worthy of attention. Very much has been done in recent years to extend the influence of local museums and he specially called attention to the fact that many are now taking up the representation of the technical industries of their districts as illustrated by the display of the scientific principles on which they are based. The growing practice of arranging temporary exhibitions was also to be commended. The public prefer to visit museums where there is usually something new to be seen and in this matter the members of local societies can greatly assist their curator by their sugges- tions and by arousing the interest of those who can contribute objects of special interest. In concluding his address Sir Henry said that "the larger "part that science is playing and must increasingly play in "industrial progress, as well as that understanding of the "relations between the advance of science and the life of the "community . . . provides for scientific societies through- "out the country a wide and fertile field of endeavour, and "in this task they will find that both their museums and their "public libraries will be able to render most valuable assistance, "each in its own sphere." The paper following the President's address was by Prof. P. G. H. Boswell on "Town and country planning schemes in "relation to sites of scientific importance." He stated that arrangements had now been made under the Town and Country Planning Act, 1932, by which the Ministry of Health notifies the British Association of the areas in which planning schemes are proposed. In order that the Association shall be able to make representations when necessary to the Ministry it must rely largely upon its Corresponding Societies for information as to sites or objects—botanical, zoological, geological, birthplaces or domiciles of scientific worthies and so forth—which may be endangered. Local societies should therefore make themselves acquainted with the planning schemes in their districts and make recommendations to the British Association. Before schemes can be put into effect they must have the consent of the