Transactions of RHASS Volume 1940 - Page 051
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| Year | 1940 |
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90 SCRAPIE. control and the elimination of the disease. These objects may be achieved either by the discovery of a method of diagnosing. by laboratory or other test, the presence of latent scrapie infection and/or the development of an effective method 03' preventive vaccination. REFERENCES. Bertrand, I., Carré, H., and Lueam, F.. 1937. La tremblante du Mouton. Rec. (10 Med. Vét., Vol. 113, pp. 540-561, 586-603. Besnoit, and More], 0., 1898. Note sur les lesions nerveuses de 1.1, tremblante du Mouton. Rev. Vét., pp. 397-400. Besnoit, 1899. La tremblante ou névrite périphérique enzootique du Mouton. Rev. Vet, pp. 265-277 and 333-343. Cuillé, J.. and Chclle, P. L.., 1936. La maladie dite tremblante d1 Mouton est-e110 inoculable ? Comptes Rendus Acad. Sci., Vol. 203. p. 1552. Cuillé, J.. and Chelle, P. L., 1938. La maladie dite tremblante (1:1 Mouton est bien inoculable. Comptes Rendus Acad. 801., Vol. 206. p. 78. Cuillé. J., and Chelle, P. L., 1938. La tremblante du Mouton est-ell» (léterminée par un Virus filtrable ? Comptes Rendus Acad. Sci. Vol. 206, p. 1687. . Dammann, 1869. Zur Etiologio der Traberkrankheit. Der Thicrarztl., pp. 255~279. Friedberger, E, and Frohner, E., 1904. Veterinary Pathology, Vo'. 1, p. 693. Gaiger, S. 1-1.. 1924. Scrapie. Jour. Comp. Path. and Then, Vol. 37. p. 259. Hurtrel D’Arboval. 1839. Dictionnaire de Médecine, de Chirurgiw et d’Hygiéne Vétériiiaire, 2nd edit, Vol. ‘11., p. 177. M‘Fadyean. J., 1918. Scrapie. Jour. Comp. Path. and Then, VO‘. 31, p. 102. M‘Fadyean, J., 1918. Sareosporidia as the cause of Scrapie. Jour. Comp. Path. and Then, Vol. 31. p. 290. M‘Gowan, J. P., 1914. Investigations into the Disease of Sheep called Serapie. Bull. Edin. and E. of Scot. Coll. of Agrii. \Yin. Blackwood &. Sons, Edinburgh. M‘Gowan, J. P., 1918. Scrapie. Jour. Comp. Path. and Then, Vol. 31, p. 278. M‘Govvan, J. P., 1922. Scrapie in Sheep. Scot. Jour. Agric., Vol. I}, p. 365. M‘Gowan, J. P., 1923. Some points relating to the Morphology and Development of Sarcocystis tcnella. Par'asit., Vol. 15, p. 139. M‘Gowan, J. P., 1925. A Further Contribution to the Subject of Scrapie. Scot. Jour. Agric., Vol. 8, p. 190. Roche-Lubin. 1848. Mernoire pratique sur la maladie connue sous les noms do prurigo-lombaire, tremblante, 4&0. Rec. (1e Méu. Vét., p. 658. Stoekman, 1913. Serapie, an Obscure Disease of Sheep. Jouz‘. Comp. Path. and Then, Vol. 26, p. 317. Stor‘kman. S., 1926. Contribution to the Study of the Disease known as Serapie. Jour. Comp. Path. and Then, Vol. 39, pp. 42-7]. 91 INSECT AND OTHER PESTS OF 1939. By A. E. CAMERON, M.A., D.Sc., F.R.S.E., Consulting Zoologist to the Society. GRASS-LAND PESTS OF CULTIVATED CROPS. EANY of the common agricultural crop pests are ones which 2 :LVL‘ been derived from grass land. Even under arable con- .‘itions there are some which still continue to choose leys hull pastures in which to breed, and it is only when grass .s. succeeded by a cultivated crop that their destructive :w-Iivities are realised. Among the more common pests that arable farming has inherited from grass land there may be mentioned Wireworms, Leather Jackets, Frit Fly, Cutworms m' Surface Caterpillars, Slugs, and Snails. With the exception < ‘5 \Vireworms, these pests complete their deveIOpment 1n the year subsequent to that in which the eggs are laid, so that :heir capacity for damaging crops following grass 1s usually "united to the first year. Reinfestation may, of course, occur here, even with changes of crops, the conditions remain : litable for repetition of breeding. As a rule, however, the i'rtational system of farming presents an effective check to ,:~sts, since there are few which feed indiscriminately on all 921d sundry crops. Wireworms are peculiar in that they wquire more than one year to complete their development, :.nd during this time they will feed on practically any crop mat may occupy the infested ground. WIREWORMS. Until the outbreak of war the tendency in farming had men to reduce the acreage under cultivation and increase .nat under grass. This policy has now been reversed, and, 2s a contribution to the national effort for increased food wroduction at home, Scottish farmers have been asked to firing under the plough 260,000 additional acres for the harvest ‘4' 1940. With such a radical change of agricultural practice “est problems will be bound to occur, and the farmer should he prepared to meet them as they arise with all means at his disposal. In recent years effective methods of coping with Leather Jackets and Slugs 1 by the application of poison ‘ Cameron, A. E., 1939. “ The Control of Potato Slugs.” Agriculture, Vol. \L\'1., No. 5, pp. 454-402. |
| Title | Transactions of RHASS Volume 1940 - Page 051 |
