148 



CARNEGIE INSTITUTION OF WASHINGTON. 



and should be free from disease. Dr. MacDowell has devised and 

 installed a set of cage-holders (racks) of iron pipe. The cages of half- 

 inch-mesh wire rest on sheet galvanized-iron bottoms, on which layers 

 of blotting paper are placed to absorb odors. 



EDITORIAL WORK. 



The Whitman manuscripts have been edited assiduously by Dr. 

 Riddle. It will be a source of satisfaction to all biologists that the 

 remarkable results of this thorough and far-sighted geneticist are being 

 made available for study. 



STATISTICAL SUMMARY. 

 PLANTS. 



The range of species, number of famiUes, and individuals of each 

 bred in Dr. Shull's experiments are shown in the following table. 



Name. 



Bursa bursa-pastoris 



B. bursa-pastoris xheegeri Fi.. . 



B. bursa-pastoris xheegeri F2. . . 



B. bursa-pastoris xheegeri F4. . . 



B. bursa-pastoris xheegeri Fj. . . 



B. bursa-pastoris xheegeri Fs. . . 



B. heegerix bursa-pastoris F3. . . 



B. heegerixbursa-pastoris F4. . . 



B. heegerixbursa-pastoris Fe. . . 



B. heegeri 



B. bursa-pastoris apetala 



B. bursa-pastoris rubella 



B. grandiflora 



B. viguieri 



Fragaria spp 



Lychnis dioica 



GDnothera atrovirens 



CE. atrovirens-cleistantha hy- 

 brids 



CE. atrovirens-lamarckiana hy- 

 brids 



(E. atrovirens-venosa hybrids. . 



CEnothera "biennis CSH". . . . 



CE. biennis CSH-atrovirens hy- 

 brids 



CE. biennis CSH-cleistantha 

 hybrids 



CE. biennis CSH-lamarckiana 

 hybrids 



CE. biennis CSH-venosa hy- 

 brids 



CEnothera biennis L 



CEnothera cleistantha 



CEnothera cleistantha-lamarc- 

 kiana hybrids 



(E. cleistantha-vcnosa hy- 

 brids 



CEnothera gigas 



CEnothera grandiflora 



Name. 



CEnothera lamarckiana 



CE. lamarckiana Xbrevistylis. . . 



CE. lata xlamarckiana 



CE. lamarckiana-venosa hy- 

 brids 



CEnothera nanella 



CE. nanella scintillans 



CE. nanella hybrids 



CE. nanella-atrovirens hybrids . . 



CE. nanella-cleistantha hybrids . 



CE. nanella-venosa hybrids. . . . 



CEnothera oakesiana 



CEnothera robinsonii 



CEnothera rubricalyx 



CE. rubricalyx-lamarckiana hy- 

 brids 



CE. rubricalyx-rubrinervis hy- 

 brids 



CEnothera rubrinervis 



CEnothera rubrinervis nanella . . 



CE. rubrinervis-atrovirens hy- 

 brids 



CE. rubrinervis-cleistantha hy- 

 brids 



CEnothera scintillans 



CEnothera stenomeres 



CEnothera stenomeres gigas. . . . 



CEnothera venosa 



CEnothera spp 



Ribes alpinum 



Rumex acetosella 



Rumex scutatus 



LTrtica urcns 



Valeriana dioica 



Valeriana officinalis 



Valeriana tripteris 



Total 





13 

 2 

 1 



11 

 1 

 1 

 8 

 2 

 2 

 2 

 2 

 2 

 3 



571 



«-3 



629 

 94 

 53 



529 



38 



27 



479 



33 



30 



8 



267 



199 



267 



148 



47 



1,235 



167 



47 



20 



52 



37 



52 



26 



913 



61 



65 



23 



45 



4 



4 



3 



53,438 



