THE JECIDIAL STAGE OF RUSTS. 



41 



Table III. — Summary of experiments to determine the vitality of successive uredo genera- 

 tions of various grain rusts — Continued. 



PUCCINIA CORONATA ON OATS— Continued. 



Capital letter series. 



Lower-case letter series. 



Series 

 letter. 



Date of 

 inocula- 

 tion. 



Number 

 of leaves 

 inocu- 

 lated. 



Date 

 matured. 



Number 

 of leaves 

 pustuled. 



Series 

 letter. 



Date of 

 inocula- 

 tion. 



Number 

 of leaves 

 inocu- 

 lated. 



Date 

 matured. 



Number 

 of leaves 

 pustuled. 



HH 



II 



JJ.. 



KK 



LL 



MM 



NN 



00 



PP 



QQ 



ER 



SS 



TT 



UU 



vv 



WW 



XX 



YY 



ZZ 



AAA 



1908. 

 Sept. 1 

 Sept. 17 

 Oct. 2 

 Oct. 22 

 Nov. 6J 

 Nov. 20 



Dec. 12 



1909. 

 Jan. 10 

 Feb. 7 

 Feb. 23 

 Mar. 14 

 Mar. 30 

 Apr. 12 

 Apr. 27 

 May 20 

 June 14 

 June 26 

 July 7 

 July 21 

 Aug. 2 



10 

 10 

 10 

 10 

 10 

 10 



10 



10 

 10 

 10 

 10 

 10 

 10 

 7 

 10 

 10 

 10 

 10 

 10 

 10 



1908. 

 Sept. 17 

 Oct. 2 

 Oct. 22 

 Nov. 6 

 Nov. 20 

 Dec. 12 



1909. 

 Jan. 10 



Feb. 7 

 Feb. 23 

 Mar. 14 

 Mar. 30 

 Apr. 12 

 Apr. 27 

 May 20 

 June 14 

 June 26 

 July 7 

 July 21 

 Aug. 2 

 ( 2 ) 



0) 



8 

 10 

 10 



9 

 10 



8 



10 

 10 

 10 

 10 



8 

 10 



7 

 10 

 10 



9 

 10 

 10 

 ( 2 ) 



kh 



ii 



jj 



kk 



11 



mm 



nn 



PP 



qq 



rr 



ss 



tt 



UU 



w 



WW 



XX 



yy 



ZZ 



aaa 



1908. 

 Sept. 1 

 Sept. 17 

 Oct. 2 

 Oct. 22 

 Nov. 6 

 Nov. 20 



Dec. 12 



1909. 

 Jan. 10 

 Feb. 7 

 Feb. 23 

 Mar. 14 

 Mar. 30 

 Apr. 12 

 Apr. 27 

 May 20 

 June 14 

 June 26 

 July 7 

 Juiy 21 

 Aug. 2 



10 

 10 

 10 

 10 

 10 

 10 



9 



10 

 10 

 10 

 10 

 10 

 10 

 9 



10 

 10 

 10 

 10 

 10 

 10 



1908. 



Sept. 17 

 Oct. 2 

 Oct. 22 

 Nov. 6 

 Nov. 20 

 Dec. 12 



1909. 

 Jan. 10 



Feb. 7 

 Feb. 23 

 Mar. 14 

 Mar. 30 

 Apr. 12 

 Apr. 27 

 May 20 

 June 14 

 June 26 

 July 7 

 July 21 

 Aug. 2 

 ( 2 ) 



(0 



8 

 10 

 10 

 10 

 10 



9 



5 



10 

 10 

 10 



6 

 10 



9 



10 

 10 

 10 

 10 

 10 

 ( 2 ) 



PUCCINIA RUBIGO-VERA SECALIS ON RYE. 



A 



B 



C 



1907. 

 Feb. 6 

 Feb. 19 

 Mar. 5 

 Mar. 27 

 Apr. 17 



10 

 10 

 10 

 3 



1907. 

 Feb. 19 

 Mar. 5 

 Mar. 27 

 Apr. 8 



39 



9 

 3 

 1 



a 



b 



c 



d* 



1907. 

 Feb. 6 

 Feb. 19 

 Mar. 5 

 Mar. 27 

 Apr. 17 

 Mav 8 

 May 27 

 June 11 

 June 26 

 July 10 

 July 24 

 Aug. 9 

 Aug. 24 

 Sept. 11 

 Sept. 28 

 Oct. 16 

 Oct. 31 

 Nov. 20 



Dec. 12 



1908. 

 Jan. 7 

 Jan. 25 

 Feb. 15 

 Mar. 3 

 Mar. 30 

 Apr. 13 

 Apr. 28 

 May 13 

 May 26 

 June 12 

 June 25 



10 



. 10 



10 



3 



72 



10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 5 

 9 

 10 



10 



9 



10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 I 10 



1907. 

 Feb. 19 

 Mar. 5 

 Mar. 25 

 Apr. 8 

 May 7 

 May 26 

 June 10 

 June 25 

 July 8 

 July 23 

 Aug. 8 

 Aug. 23 

 Sept. 10 

 Sept. 27 

 Oct. 8 

 Oct. 31 

 Nov. 18 

 Dec. 10 



1908. 

 Jan. 7 



Jan. 25 

 Feb. 15 

 Mar. 3 

 Mar. 19 

 Apr. 13 

 Apr. 28 

 May 13 

 May 26 

 June 12 

 June 25 

 July 10 



3 10 



8 

 ( 4 ) 



1 

 1 



D' 



E6 



F 









f 



Iv.:::::: 



i 



( 4 ) 



G 











( 4 ) 

 ( 4 ) 



7 



H 











I 











J .. .. 











10 



K 











k::::::: 



i 



10 



L 











2 



M 











m 



n 



o 9 



P 



q 



r 



s 



t 



u 



V 



w 5 



X 



y 



z 



aa 



bb 



cc 



dd 



10 



N 



09 



P 



Sept. 11 

 Sept. 28 

 Oct. 16 

 Oct. 31 

 Nov. 20 



Dec. 12 



1908. 

 Jan. 7 

 Jan. 25 

 Feb. 15 

 Mar. 3 

 Mar. 30 

 Apr. 13 

 Apr. 28 

 May 13 

 May 26 

 June 12 

 June 25 



10 

 10 

 6 



10 

 10 



8 



9 



10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 9 

 7 



Sept. 27 

 Oct. 8 

 Oct. 29 

 Nov. 18 

 Dec. 10 



1908. 

 Jan. 7 



Jan. 25 

 Feb. 15 

 Mar. 3 

 Mar. 19 

 Apr. 13 

 Apr. 28 

 May 13 

 May 26 

 June 12 

 June 25 

 July 10 



8 10 

 ( 4 ) 



6 

 9 

 10 



8 



10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 9 

 5 



10 

 ( 4 ) 



5 



Q 



9 



R 



S 



10 



10 



T 



10 



U 



V 



10 

 10 



W5 



X.. 



Y 



Z 



10 

 10 

 10 

 10 



AA 



BB 



CC 



DD 



10 

 10 

 10 

 10 



i Not recorded. 



2 Experiments discontinued. 



3 Pustules vigorous. 



4 Several. 



5 Series sent from Washington, D. C, to Minneapolis, Minn. 



6 Lost in transit. 



7 Inoculations made from material from dried leaves. 



8 Inoculations made from m. 



9 Series sent from Minneapolis, Minn., to Washington, D. C. 



216 



