THR GKM'S CO.\J(>ljll-C/('M. ()57 



P^XI'LANATIOX OF ILLUSTRATIONS. 



The photoiiiicr()<;ra|)hs were taken with Edinger's drawing 

 apparatus, and the ch-awings made witli the aid of a Leitz drawing 

 ocular. 



PI. 29, a Apples witii "russet" markings. 

 b Blisters on apple twigs. 

 c Cracking in an api)le. 



d Coniofliccliiiii mycelitmi on an a))])le twig. 

 c Phoiiia ])\cnidia formed on [^.eerwf)rt gelatine. 

 PI. _^c), a I 600) Couiothccium stage on pear twig. 



/' {600) Section through hlister. Note the Conioflicciuin 



spores. 

 c Original culttire on heer\vort gelatine from ])ear twig 



(seven days 20° C. ). 

 d Grown on sterilised api)le ])lugs { 2~ days 20° C). 

 P1.3i.(/ (440) Coiiiotheciiiiii stage from back of sterilised ai~)ple 

 twig. 

 /' (440) From mole grey growth on sterilised apple twig. 

 PI. 32, (/ T\vcnidia on ])rune agar (six (la\s 20" C). 

 /' Pycnidia on sterilised bean leaf. 

 c (600) Section through ])ycnidinm on sterilised bean 



stalk. 

 d Carrot agar (six days). 

 c Treacle agar (six days). 



/ Growth on — (i) Dox .4 per cent, gallic acid; (2) Dox 

 .4 per cent, dextrose; (3) Dox .4 per cent, malic 

 acid ( Febrtiary 7, 1^14 to March 26. 1914 ). 

 PI. 33, (/ (600) From Dox .4 per cent, gallic acid. 

 h (600) From Dox .4 ])er cent, gallic acid. 

 c (440) From Dox 1.5 pe"r cent, dextrose. 

 d (440) h^-om Dox 1.5 per cent, dextrose. 

 I''!. 34, (; (440) l'"rom Dox T.5 ])er cent, dextrose. 

 b (440) From Dox .4 per cent, malic. 

 c C)riginal culture on becrwort gelatine from pear twig 

 d (440) P'rom beerwort gelatine i)late. 

 c (600) Section through ])ycnidia on cabbage. 

 Fig. 1 (800) Clam]) connections and buds on mycelimn fr(im 



treacle agar (six davs 20" C. ). 

 Fig. 2 ( 800 ) Fnrolling of hy])h;e in greyish growth on sterilised 

 apple twig. 

 NoTK. — The following allowances must be made for reduc- 

 tions made in reprodttcing the i)hotogra])hs of which the n\'iguifi- 

 cations are given above : — 



Plate a and /' reduced ■'/, (= X 34^)- 

 Plate 30 a and b reduced to ->4 (= X 33o)- 

 Plate 7,2 c reditced to V2 (= X 300). 

 Plate ;^^^ a and /' reduced to >-2 (= X 3<^o). 

 Plate ^7, c and d reduced to ]/> (=-- X 220). 

 Plate 34 a, b, and d, reduced to Vn (^ X 200). 

 Plate 34 r reduced to ^/.., (= X 270). 



