EXPERIMENTS IN THE GROWTH OF PYRETHRUM. 7 



small insects, of which I send you specimens, and the bumblebee seem 

 to use the blooms without hurt. 



[Tim insect mentioned is Cerotoma en, nine". Fabr.] 



New York. Rochester, June 11. 1882.— M. Ai.dhx. 

 The seeds of Pyrethrum roseum sent to me fifteen months ago were 



divided into two parts and planted: 1st, in a gravelly loam — these 

 did not live: 2d, in a flower bed partially shaded in summer, having a 

 southern exposure, and composed of leaf-mold, one half: well-rotted cow 

 manure, one-fourth: clay, one-fourth. Liberal additions of waste cof- 

 fee-grounds have been thrown on this bed from time to time. The py- 

 rethrum planted there is in tine condition, and is now in bud; the 

 plants are about 1«S inches high. They did not flower last summer, and 

 the roots were left out all winter, protected by three inches of leaves and 

 manure. 



Pennsylvania. New Bloomfield, October 2, 1883. — E. W. Cl.yypole. 



In the spring of 1881 you sent me some seed of the Persian ins 

 plant. P. roseum. I sowed some of it and it came up well. It _ 

 through the summer in a box and was left out through the winter. The 

 roots being much exposed by the sides of the box were liable to be killed 

 by frost. Yet it lived. I was away from home during the cold part of 

 the winter, which came before Christmas, but at my return the plants 

 were alive and continued so, at least some of them, until they began to 

 grow in the spring, when, unfortunately, they were forgotten and ex- 

 posed to a cold rain and sudden hard frost in March, which killed them 

 in the growing state. In the spring of 1882 I sowed again some of the 

 same seed, which T had kept over, and also some of the Dalmatian sp< 

 P cineraricefolium. Both came up well. The seed leaves of the latter 

 were less spatulate than those of the former, and the later leaves came 

 more freely. Altogether, the latter is the more freely growing plant. 

 They flourish well through the summer, and though the winter v 

 very cold one (in Pennsylvania), yet with very little shelter such as 

 that of an open shed or an unwarmed room) they survived it. and in 

 the spring began to grow very early. May add that the Dalmatian 

 species was evergreen, retaining its leaves all the winter. The other 

 was not. In the spring I planted them in an open border, where they 

 grew well and flowered, especially the Persian plant, the tlowers being 

 crimson, magenta, and white. The other species did not bloom as freely. 

 I do not know how they will bear the winter in the ground, but the 

 probability is in their favor. Judging from appearances the seed of 

 neither species was matured. 

 8993— Bui. \ 7 



