lOO REPORTS ON INVESTIGATIONS AND PROJECTS. 



though to what extent this will be true wheu both pareuts are 

 bearers of the characters in question must be determined by further 

 investigation, as the pollen parent of this j'ear's progeny is in each 

 case unknown. 



Hybridizations made last year between different varieties of beans 

 give excellent material illustrative of one of Mendel's laws of inher- 

 itance, in that all pigments are dominant over white and in each case 

 the darker pigment is dominant over the lighter. In every case the 

 reciprocals are equal. Crosses with the "White Flageolet" give 

 beautiful examples of )iova and illustrate the nature of latency. 

 The offspring from crosses between this variety and any pigmented 

 bean, whether yellow, brown, or black, invariably bear purple- mottled 

 seeds in the first hybrid generation. 



Hybridizations have been attempted this year between varieties or 

 species of Lychnis, Eschscholtzia, Verbasaivi, Helianthus, etc. 



A study into the significance of stages in the development of Siuni 

 cicutcEfolhim was completed and published as No. 3 of the Papers of 

 the Station for Experimental Evolution. 



Most of the specimens collected during 1904 for the herbarium 

 have been mounted and arranged according to Engler & Prantl's 

 system of classification. These include : The Flora of Cold Spring 

 Harbor, L. I., 190 specimens ; seedling and juvenile forms, 3 .spec- 

 imens ; pedigreed plants, 72 specimens ; total, 265 specimens. 



Among these the following have not been hitherto recorded from 

 Eong Island: Panicwn tennesseejise, Agrostis scribneriana, Scirpus palu- 

 dosus, Carcx scoparia coyidcnsa, Rosa 7nicrantha, Onagra oakesiana. 

 Xanthhim commune, Aster herveyi, A. salicifoliHs,2ind A. lo7vrieanjis. 



The following recorded for other parts of Long Island have not been 

 mentioned for Cold Spring Harbor : Ammophilaarenaria, Gyrostachys 

 simplex, rifoliuyn Thybriduvi, Hieraciuvi maria^uim, Bidens cermia. 

 Solid ago rugosa, and 5". jnncea. 



The number of specimens added to the herbarium this year is esti - 

 mated at 600. 



REPORT OF F. E. LUTZ. 



The biometrical and experimental work with Gryllus has been 

 carried on throughout the year. From the matings made during 

 September, 1904, 11 8 adult offspring were reared. There was a consid- 

 erable mortality in the early stages. It is hoped this will be, to a great 

 extent, avoided in future generations. All these adults, with the 

 exception of three badly deformed ones, have been mated and a large 

 quantity of eggs has already been obtained. These matings are, for 

 the most part, inter sc, but a number of the pedigree crickets have been 



