l82 Transactions British Mycological Society. 



probably identical with Oospora Ludwigii (Hans.) Sacc. et D. 

 Sacc, a sporing yeast and bacteria. 



6. The first three kinds of flux persisted throughout the 

 year. In the case of elms at least the flux originated in a watery 

 exudation from the heart wood which appears to be connected 

 with water storage in the wood. 



7. Large amounts of calcium carbonate were present in the 

 red and brown fluxes. This is derived from the vessels of the 

 wood and renders the reaction of the exudation favourable to 

 the growth of organisms. 



8. The white fluxes originate in the bark and are always 

 associated with wounds or an unhealthy state of the tree. They 

 are more acid than the brown fluxes and last only for a short 

 time in the summer months. 



REFERENCES. 



(i) LuDwiG, F. Ueber Alkoholgahrung und Schleimfluss lebender Baume. 

 Hedwigia, xxv, p. 168. 1886. 



(5 



(6; 



(7 

 (9 



(10 

 (II 



(12 



(13 

 (14 



(15 



(16; 

 (17: 



(is; 



(19; 



(20^ 



(21 



Do. Ber. der Deutsch. Botan. Gesell. iv, 2, p. xvii. 1886. 



Der braune Schleimfluss. Eine neue Krankheit unserer Apfelbaume. 



Centr. f. Bakt. etc., i Abt. iv, p. 323. 1888. 



Hansen, E. Ch. Ueber die in dem Schleimflusse lebender Baume beo- 

 bachteten Mikroorganismen. Centr. f. Bakt. etc., i Abt. v, pp. 632, 663, 



693- 1889. 

 LiNDAU, G. Die Organismen im Saftfluss der Laubbaume. Naturwiss. 



Wochenschr. ix, 52, p. 631. 1894. 

 LuDwiG, F. Die Genossenschaften der Baumflussorganismen. Centr. 



f. Bakt. etc., 2 Abt. 11, p. 337. 1896. 

 TuBEUF, K, VON and Smith, W. G. Diseases of plants induced by cryptc- 



gamic parasites. Longmans, Green, 1897 (p. 141). 

 Massee, G. Kew Bulletin, 1897, p. 423. 

 HoLTz, W. Beitrag zur Kenntnis der Baumfliisse und einiger ihrer 



Bewohner. Centr. f. Bakt. etc., 2 Abt. vii, pp. 113, 179, 229, 274, 338. 



1901. 

 Journal of the Board of Agriculture, xiii, p. 181. June, 1906. 

 Massee, G. Kew Bulletin, 1907, p. 240. 

 RiDGWAY, R. Colour standards and colour nomenclature. Washington, 



1912. 

 ScHNELL, E. Die auf Produkten der Landwirtschaft und der landwirt- 



schaftlichen Gewerbe vorkommenden Oospora (Oidium) lactis- varietaten. 



Centr. f. Bakt. etc., 11, Abt. xxxv, p. i. 1912. 

 Pethybridge, G. H. Notes on some saprophytic species of fungi, asso- 

 ciated with diseased potato plants and tubers. Tr. Br. Myc. Soc. vi, 



p. 104. 1918. 

 Brooks, F. T. and Hansford, C. G. Mould growths upon cold-store 



meat. Tr. Br. Myc. Soc. viii, p. 124. 1923. 

 LuDWiG, F. Hedwigia, xxiv, p. 191. 1895. 



tjber Alkoholgahrung und der Schleimfliisse, etc. Centr. f. Bakt. etc., 



I Abt. VI, p. 133. 1889. 



LoRRAiN Smith, A. and Ramsbottom, J. Tr. Br. Myc. Soc. iv, p. 320. 



1914. 

 GuiLLiERMOND, A. Rechcrchcs cytologiques et taxonomiques sur les 



Endomycetees. Rev. Gen. de Bot. xxi, p. 374. 1909. 

 Craib, W. G. Regional spread of moisture in the wood of trees. Notes 



from the Royal Botanic Gardens, Edinburgh, xi. No. li, pp. 1-18. 191 8. 



Ibid. XIV, No. Lxvi, pp. 1-8. 1923. 



