EXPERIMENTS IN THE GROWTH OF PYBETHBUM. 95 



for the reasons first given r do not hesitate to say that there can be do 

 danger in sending them even there, and as it seems that there ifl no 

 law to warrant their detention they may certainly be forwarded without 

 fear of injury. 



Respectfully, 



C. V. RILEY, 



Entomologist, 

 Hon. Geo. B. Loring, 



Commissioner of Agriculture. 



FURTHER REPORTS ON THE GROWTH OF PYRETHRUM. 



California. San Bernardino, August 12, 1883. — Jaimes S. Brooks. 

 I have a few plants of pyrethrnm now in flower, raised from seed that 

 I sent East for last year, but as I do not know how to prepare the pow- 

 der for the purpose of destroying insects I shall let the seed ripen and 

 plant again- next season, hoping that I will succeed better, as but very 

 few plants came up. 



Canada. Dundas, Out., June 22, 1882. — John A. Fisher. 



I have much pleasure in inclosing you three flowers raised by me 

 from the pyrethrum seed which you so kindly sent me a little over a 

 year ago. The plants that I have are in a perfect mass of bloom. 



Canada. Riverside, Toronto, September 9, 1883. — Alfred H. Moore. 

 A plant of the 1881 seedlings of pyrethrum rose bloomed last May 

 (1883) so gloriously as to elicit a notice in the Evening Telegram of this 

 city. Had in bloom, nearly at same time, twenty-seven heads, but no 

 fecundated fruit. Are the flowers all entomophilous, and so abortive? 



Illinois. Champaign, July 12, 1882.— S. A. Forbes. 



Concerning the pyrethrum seed sent me, I believe that I have not re- 

 ported that I succeeded in raising a few plants last year, although most 

 failed because of the severe drought. Those that grew survived the 

 winter, blossomed this summer, and matured their seed about three 

 weeks ago. This was Pyrethrum roseum. The seed of both species has 

 come up sparingly this spring, injured this time by the extremely wel 

 weather. 



Iowa. Garrison, June 10, 1882. — James II. DiOKSON. 



I received a package of pyrethrum seed (insect-powder plant in the 



spring of 1881 from Professor Riley, and sowed seed in a shallow box 

 and placed it in a hot-bed. The seed nearly all grew, and were trans- 

 planted to the garden the latter part of April. They grew fast and had 

 a few blooms the latter part oi September, but not enough to pay for 

 the gathering. Before hard-freezing weather set in I gave the bed a 



