The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures (1916)
Winton, Andrew Lincoln, 1864-1946, Moeller, Josef, 1848-1924, Winton, Kate Grace Barber, Mrs · New York, John Wiley & sons, inc.; [etc., etc.] · leaf 244
CASTOR BEAN. 223 outer ends the cell cavities are somewhat broader than at other parts.Seen in surface view, the cells are polygonal, 8-15 ^ in diameter. 5. Inner Layer. After removing the foregoing layers, the seed, onclose examination, is seen to be enveloped by a thin white skin—the innerlayer…