858 ON EPIDERMAL CHLOROPHYLL. 
After Ricurer :— 
Docidium nobile; fig. ¢ is not the end, but the basal part of a 
emicell. 
After Wine :— 
Cosmarium Boeckii, fig. b, ¢. 
After Wirrrocx :— 
Closterium calosporum, fig.csupr. 8. pilosum, fig. b, e. 
Cosmarium gotlandicum, fig. b. [The fig 
C. caleareum, mostly. 
Staurastrum leve var. Clevei. 
ures a, b, of Cosmarium 
trafalgaricum Wittr. are wrong] 
ON EPIDERMAL CHLOROPHYLL. 
By Spencer Le M. Moors. F.L.S. 
chlorophyll of epidermal tissues. He found that of 102 dicotyle- 
donous types as high a proportion as 94 had chlorophyll in the 
eriod of life. This result 
cells of their epidermis at some p was 
quite unexpected in view of the prevalent idea of the exceptional 
occurrence of epidermal chlorophyll, an idea given fresh ¢ 
elm, holly, Spanish chestnut, Mahonia aquifolia, apple, pear, plum, 
rry ; there was thus nothing peculiar about it, and one ma 
pieces of epidermis, and mount them immediately in water. 
most cases considerable stretches of the tissue can thus be obtained 
without any difficulty ; and careful focussing and a little practice in 
detecting the differences in respect of colour and size between the 
chlorophyll of epidermal and that of the underlying more or less 
broken-up palisade or mesophyll cells are all the points to be borne 
* Sitzb. der K. Akad. Wien, 1879, p. 87. + Vergl. Anat. p. 70. 
