68 Cooperative Investigatioiis on Plauts 



of the same garden non-experimental (7) seed gave streng liealthy plants of plenty 

 of blossom. Counting and reduction by K. Pearson. 



(B) Oxford Crop. W. F. R. Weldon had seed types (a), (ß) and (7). The 

 plants were raised in pots, and bcsides the Stigmata a considerable numbcr of 

 characters on the individual plants was observed. The plants were raised in pots 

 for ease in measureinent am! hamlling of individuals, but the need for constant 

 watering introduced other difficulties to be referred to later. Counting and 

 reduction by W. F. R. Weldon and in the case of the reduction of " first flower " 

 characters by Alice Lee. 



(C) Chelsea Crop TT. F. \V. Oliver had seed types ex) and (ß). Tliis crop 

 was hopelessly ruined by a storm. The plants Howered well but the young fruits 

 got beaten down and rotted off. Only 355 capsules wero available for counting, 

 one or two to a plant, and the frequency distribution of these seems the oidy data 

 worth dealing with. 



(D) Crockham Crop. A. G. Tansley had seed types {ß) and (7), and grew 

 a very healthy crop. The counting and reducing are due to Marie A. Lcwenz. 



(E) Bookham Crop. G. U. Yule grew a crop of (a) seed. The plants were 

 faii'ly healthy, but the crop was not fuily harvested and counted. Counting is 

 due to G. U. Yule and reduction to Alice Lee. 



(F) Enfield Crup T. W. R. Macdonell grew a good crop froni both (a) and 

 (ß) and also a contrul series of (7). Froin his seed were taken supplies for the 

 foUowing crops in 1901 : 



(G) Enfield Crop TT. Thls was grown from seed of type (S). From the 

 capsules of the Enfield crop of 1900, ö7 were taken from different plants with 

 bands varying from 9 to 20. 13 of the series faiied, but the remaining H gave 

 239 plants with 566 capsules — a poor crop compared with that of 1900. 

 Mrs W. R. Macdonell counted both Enfield crops, and the reductions are by 

 W. R. Macdonell himself. 



(H) Kidderminster Crop. This was grown by John Notcutt from seed of type 

 (a) for 100 Enfield plants. The crop was a magnificent one, giving 1618 individual 

 plants bearing more than 19,000 capsules. The work of counting the bands on 

 these capsules is due to Margaret Notcutt, Marie A. Lewenz, Edna Loa-Smith 

 and Norman Blanchard. The whole of the labour of reduction is due to W. Palin 

 Elderton, one of whose tables involves upwards of 3,800,000 entries. 



It will be Seen that the material used for the purpose of the present ]iapcr is 

 drawn from fairly diverse districts: London (2 crops), Oxford, Hcrtfordshire 

 (2 crops), Surrey (2 crops) and Worcestersliire. Further, it enables us to 

 appreciate the inagnitude of parental, grandparental and fratemal relations in 

 plants, and the influence of cnvironment, in the case of a single cliaracter in one 

 species. There are many difticulties and obscurities, which require special 

 investigation, and it is hoped that other experiments now in progress will throw 

 liglit on sonie of these matters. 



