40 



THE RUSTS OF GRAINS IN THE UNITED STATES, 



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

 tions of various grain rusts — Continued. 



PUCCINIA SIMPLEX ON BARLEY— 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. 



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 



A us. 



2 



Number 

 of leaves 

 inocu- 

 lated. 



Date 

 matured . 



Number 

 of leaves 

 pustuled 



H... 



JJ.. 

 KK. 

 LL. 



MM. 



NX. 



1908. 

 Sept. 17 

 Oct. 2 

 Oct. 22 

 Nov. 6 

 Nov. 20 



Dec. 12 

 1909. 

 OO Jan. 10 



PP : Feb. 7 



QQ : Feb. 23 



RR I Mar. 14 



SS. ! Mar. 30 



TT Apr. 12 



UU Apr. 27 



V'V I May 20 



WW June 14 



XX ! June 26 



XX Julv 7 



YY Julv 21 



ZZ j Aug. 2 



190S. 

 Oct. 2 

 Oct. 22 

 Nov. 6 

 Nov. 20 

 Dec. 12 



1909. 

 Jan. 10 



8 Feb. 7 

 10 I Feb. 23 

 10 Mar. 14 



Mar. 30 

 Apr. 12 

 Apr. 27 

 May 20 

 June 14 

 June 26 

 July 7 

 July 21 

 Aug. 2 

 C 1 ) 



C 1 ) 



n 



jj— - 

 kk.. 

 11___. 



mm . 



nn . 



oo... 

 pp.. 

 qq.. 

 rr... 



ss... 

 tt... 



UU . . 

 vv . . 

 ww . 



XX.. 



yy-- 



7.7.. 



1908. 

 7 Oct. 2 

 10 Oct. 22 

 10 ; Nov. 6 

 10 I Nov. 20 

 10 ! Dec. 12 



1909. 

 10 j Jan. 10 



10 Feb. 7 

 10 Feb. 23 

 10 Mar. 14 

 10 , Mar. 30 

 10 Apr. 12 

 10 Apr. 27 

 7 ' May 20 

 10 ; June 14 

 10 June 26 

 10 Julv 7 

 July 21 

 Aug. 2 

 C 1 ) 



C 1 ) 



PUCCINIA CORONATA ON OATS. 



1907. 



A I Feb. 6 



B ' Feb. 19 



C ' Mar. 5 



D3 Mar. 21 



E Apr. 17 



F.... ! May S 



G i May 27 



H ; June 11 



I I June 24 



J I July 8 



K July 24 



Aug, 

 Aug. 24 

 Sept. 11 

 Sept. 28 

 Oct. 24 



Q Nov. 



Nov. 20 



S ' Dec. 12 



1908. 



T 



IT 



V 



W3... 



X 



Y 



Z 



Jan. 7 



Jan. 25 



Feb. 15 



Mar. 3 



Mar. 30 



Apr. 13 



Apr. 28 



AA May 13 



BB kMay 26 



CC ! June 12 



DD : June 25 



EE I July 10 



FF July 28 



GG I Aug. 13 



216 





1907. 



10 



Feb. 19 



9 



Mar. 5 



9 



Mar. 21 



10 



Mar. 30 



4 10 



May 7 



10 



May 26 



8 



June 10 



10 



June 23 



10 



July 8 



10 



July 23 



10 



Aug. 8 



10 



Aug. 23 



10 



Sept. 10 



10 



Sept. 27 



10 



Oct. 8 



9 



Nov. 8 



10 



Nov. 18 



9 



Dec. 10 





1908. 



10 



Jan. 7 



10 



Jan. 25 



10 



Feb. 15 



10 



Mar. 3 



10 



Mar. 19 



10 



Apr. 13 



10 



Apr. 28 



10 



Mav 13 



10 



May 2ti 



10 



June 12 



10 



June 25 



10 



July 10 



10 



July 28 



9 



Aug. 12 



10 



Sept. 1 



1907. 





Feb. 6 



10 



Feb. 19 



10 



Mar. 5 



10 



Mar. 21 



10 



Apr. 17 



*10 



May 8 



10 1 



May 27 



9 | 



June 11 



10 



June 24 



10 



July 8 



10 



July 24 



10 



Aug. 9 



10 



Aug. 24 



10 



Sept. 11 



10 



Sept. 28 



10 



Oct. 17 



10 



Oct. 31 



10 



Nov. 20 



8 



Dec. 12 



10 



1908. 





Jan. 7 



10 



Jan. 25 



10 



Feb. 15 



10 



Mar. 3 



10 



Mar. 30 



10 



Apr. 13 



10 



Apr. 28 



10 



May 13 



10 



May 26 



10 



June 12 



10 



June 25 



10 



July 10 



10 



July 28 



9 



Aug. 13 



10 



1 Experiments discontinued. 



2 Pustules vigorous. 



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. 

 e Several. 



1907. 

 Feb.- 19 

 Mar. 5 

 Mar. 21 

 Mar. 30 

 May 7 

 May 26 

 June 10 

 June 23 

 July 8 

 July 23 

 Aug. 8 

 Aug. 23 

 Sept. 10 

 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 

 Mav 13 

 Mav 26 

 June 12 

 June 25 

 Julv 10 

 July 28 

 Aug. 12 

 Sept. 1 



( 6 ) 



