221 Prof. Bailey on the Crystals found in Plants. 



Table A. 

 Dicotyledonous plants containing crystals of form A. (Figs. 4 to 9.) 



AcEKACEJE, Acer, several species. In bark and wood, and along 

 veins of leaf. 



JEsculacejE, iEsculus hippocastanum. In bark of petiole, a few sim- 

 ple crystals, with abundance of bunches. 



Apocyneje, Nerium oleander. 



Aquifoliaceje, Prinos catharticus. 



AuRANTiACE^, Citrus aurantianum. Crystals (see figs. 6, 7, 8) abun- 

 dant in leaf and petiole, and in pulp of fruit. 



Betulace^, Alnus serrulata. 

 Betula excelsa. 



Balsamace^, 

 cupulifer^, 



" papyracea. 

 Liquidambar styraciflua. 



Quercus nigra. 



" tinctoria. 



" alba. 



" montana. 



" phellos. 

 Castanea vesca. 



" pumila. 



Fagus sylvatica. 

 Carpinus Americana. 

 Ostrya Virginica. 



In every species of Cupuliferse 

 which I have examined, whether 

 indigenous or exotic, great abun- 

 dance of crystals were found, 

 usually presenting the forms, fig. 

 6 to 9, but also having bunches 

 (form B, fig. 15) occasionally 

 mingled with them. In many 

 species of this family it is easy 

 to see the crystals in situ, in 

 thin layers of the liber. In the chestnut they may 

 be seen thus in great abundance, and disposed in 

 cells, as in fig. 3. 

 Swietiana Mahagoni. In scrapings of Mahogany wood, 

 and in the ashes, large crystals may be found in 

 abundance. 

 Cornus florida. Crystals abundant in the bark. 

 Andromeda racemosa. Crystals small ; may be seen 



in ashes of leaf. 

 Azalea viscosa. Crystals small. 



Diospyros Virginiana. Large and rather irregular crys- 

 tals, scattered through the leaves. 

 Frankeniace^, Frankenia Isevis. Bunches also. 



HAMAMELACEiE, Hamamelis Virginica. Crystals abundant in ashes of 

 leaf, along each vein, and easily isolated from the 

 bark. 

 Legxtminos^, Virgilia lutea. 



Psoralea lupinellus. 

 Crotalaria sagittalis. 



CEDRELACEiE, 



CoRNACEiE, 



Ericaceae, 



EsENACEiE, 



