THE ^CIDIAL STAGE OF RUSTS. 



39 



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

 tions of various grain rusts — Continued. 



PUCCINIA RUBIGO-VERA TRITICI ON WHEAT— 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 . 



II 



JJ 



KK 



LL 



MM 



NN. 



00 



PP 



QQ 



RR 



SS 



TT 



UU 



vv 



WW 



XX 



YY 



ZZ 



AAA 



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 31 

 Aug. 2 



8 

 10 

 10 

 10 



9 



10 



10 

 7 

 10 

 10 

 10 

 10 

 3 



10 

 ' 8 

 10 

 10 

 10 

 10 



1908. 

 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 

 C 1 ) 



8 

 10 



9 

 10 



9 



10 



5 

 7 



10 



10 

 7 

 2 

 3 



10 

 7 

 7 

 8 



10 



0) 



ii 



JJ 



kk 



11 



mm. 



nn 



00 



PP 



<w 



rr 



ss 



tt 



UU 



vv 



WW 



XX 



yy 



ZZ ... 



aaa 



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 



10 

 10 

 10 

 10 

 10 



10 



10 

 5 



10 

 10 

 10 

 10 

 5 



10 

 10 

 10 

 10 

 10 

 10 



1908. 

 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 

 C 1 ) 



10 

 10 

 8 

 10 

 10 



7 



2 

 5 

 10 



10 



1 



2 

 5 

 9 

 9 



10 

 10 

 10 



0) 



PUCCINIA SIMPLEX ON BARLEY. 



T... 



TJ... 



V... 



W». 



X... 



Y... 



Z... 



A A. 



BB 



CO.. 



DD 



EE 



FF. 



GG. 



HH. 



1907. 





1907. 



Feb. 6 



10 



Feb. 19 



Feb. 19 



10 



Mar. 5 



Mar. 5 



10 



Mar. 26 



Mar. 26 



10 



Apr. 4 

 May 7 



Apr. 17 

 May 8 



47 



10 



May 28 



May 29 



10 



June 13 



June 14 



10 



June 25 



June 26 



10 



July 8 



July 10 



10 



July 23 



July 24 



10 



Aug. 7 



Aug. 9 



10 



Aug. 23 



Aug. 24 



10 



Sept. 8 



Sept. 9 



10 



Sept. 27 



Sept. 28 



10 



Oct. 8 



Oct. 24 



10 



Nov. 8 



Nov. 9 



9 



Nov. 18 



Nov. 20 



10 



Dec. 10 

 1908. 



Dec. 12 



10 



Jan. 7 



1908. 







Jan. 7 



10 



Jan. 25 



Jan. 25 



10 



Feb. 15 



Feb. 15 



10 



Mar. 3 



Mar. 3 



10 



Mar. 19 



Mar. 30 



10 



Apr. 13 



Apr. 13 



10 



Apr. 28 



Apr. 28 



10 



May 13 



i May 13 



10 



May 26 



May 26 



10 



June 12 



June 12 



10 



June 25 



June 25 



10 



July 10 



July 10 



10 



July 28 



July 28 



9 



Aug. 12 



Aug. 12 



4 



Sept. 1 



Sept. 1 



10 



Sept. 17 



( 2 ) 



( 2 ) 



t... 



u... 



v... 



W3_ 



(0 



bb. 

 cc. 

 dd. 

 ee.. 

 if... 

 gg- 

 hh. 



1907. 

 Feb. 6 

 Feb. 19 

 Mar. 5 

 Mar. 26 

 Apr. 17 

 May 8 

 May 29 

 June 14 

 June 26 

 July 10 

 July 24 

 Aug. 9 

 Aug. 24 

 Sept. 9 

 Sept, 28 

 Oct. 16 

 Oct. 31 

 Nov. 20 



Dec. 12 



1908. 

 Jan. 7 

 Jan. 25 

 Feb. 15 

 Mar. 3 

 Apr. 2 

 Apr. 13 

 Apr. 28 

 May 13 

 May 26 

 June 12 

 June 25 

 July 10 

 July 28 

 Aug. 12 

 Sept. 1 



1907. 

 Feb. 19 

 Mar. 5 

 Mar. 26 

 Apr. 4 

 May 7 

 May 28 

 June 13 

 June 25 

 July 8 

 July 23 

 Aug. 7 

 Aug. 23 

 Sept. 8 

 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 

 July 28 

 Aug. 12 

 Sept. 1 

 Sept. 17 



1 Experiments discontinued. 



2 Several. 



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



4 Inoculations made from material from dried leaves. 



5 Series sent from Minneapolis, Minn., to Washington, D. C, October 8, 1907. 

 e Extreme heat in greenhouse. 



* Not recorded. 



( 2 ) 



C 2 ) 



( 2 ) 



216 



