234 Transactions British Mycological Society. 



mortar, but let us also build houses. We still live in the houses 

 the giants of last century built for us; but our possessions 

 overflow. There are great heaps of bricks lying around and 

 instead of using them we merely pile others on the top. 



Synthesis may not be the work of one man, for the labour 

 would be too great, but if many help, a fair and useful structure 

 may arise. 



The present paper is a very tentative essay towards synthesis 

 in mycology. Two out of many possible lines of construction 

 have been followed and it is hoped that others may criticise 

 and co-operate in the building. 



LITERATURE REFERRED TO. 



(i) Appel, O., and Wollenweber, H. W. — K. Biol. Anst. 

 Land- und Forst. Arb. viii. 1910. 



(2) Baerthlein.— Ber. lib. V u. VI Tag. d. fr. Ver. f . Mikrobiol. 



Berlin, 1911 and igi2. 



(3) Beach, W. S. — Am. Journ. Bot. vi. 1919. 



(4) Bernhardt, G., and Markoff, W. N.— Centr. f. Bakt. i. 



Ixv. 1912. 



(5) Butler, E. J. — Fungi and Disease in Plants. Calcutta, 1918. 



(6) Clements, F. E. — Bot. Soc. Am. Publ. xxxiv. 1908. 



(7) Cohn, F. — Beitr. Biol. d. Pflanzen, i. u. ii. 1872. 



(8) Dobell, C. — Journ. Genetics, ii. 1913. 



(9) Dox, A. W.— U.S. Dept. Agr. Bur. PI. Ind. Bull. 120, 



1910. 



(10) Eisenberg, P. — Weichhardt's Ergebnisse, 19 14. 



(11) Elliott, J. A. — Am. Journ. Bot. iv. 1917. 



(12) Freeman, E. M. — Anns. Bot. xvi. 1902. 



(13) Freeman, E. M., and Johnson, E. C. — U.S. Dept. Agr. 



Bur. PI. Ind. Bull. 216, 1911. 



(14) Gaiimann, E. — (i) Anns. Mycol. xvi. 1918. 



— (2) Beih. Bot. Centr. xxxv. 1918. 



(15) Hiss, P. H., and Zinsser, H. — Text Book of Bacteriology, 



1918. 



(16) Horiuchi. — Quoted in Simon, C. E. — Infection and 



Immunity. London, 1913. 



(17) Hort, E. C. — Brit. Med. Journ., 1914-1918. 



(18) Huxley, T. H.— Brit, and For. Med. Chir. Rev. xii. 1853. 



(19) Johannsen, W. — Uber Erblichkeit in Populationen und in 



reinen Linien. Jena, 1903. 



(20) Johnson, E. C— U.S. Dept. Agr. Bur. PI. Ind. Bull. 224, 



1911. 



(21) Lloyd, G. C. — The Myths of Mycology, Pt. i. 1917. 



