396 
W. Lauder Lindsay’s Experiments on the 
TABLE 
Showing the effect of age, exposure to light and moisture, nature 
in modifying or altering the tint or degree of colour educible. 
Name of Lichen. 
Collemanigrescens 
Evernia prunastri, 
Gyrophora deusta, 
Lecanora atra, 
parella v. albo flav, 
v. pallida 
tartarea 
Lecidea speirea, 
atro-pruinosa, 
coronata, 
lurida, 
sanguinaria, 
Nephroma resupinata, 
v. helvetica, 
Parmelia aleurites, 
caperata, 
fahl.,v. vulg. maj.. 
olivacea cort. glabra, 
omphalodes, 
v. panniformis, 
perlata, 
stellaris, 
v. tenella, 
Date when 
collected. 
Nature of Country where 
habitat. collected. 
Rocks Scotland 
— Switzerland 
Trees England 
45 France 
Alpine rocks Switzerland 
5: France 
Trees England 
Alpine rocks Switzerland 
Trees Pe 
Rocks 3 
i France 
55 Switzerland 
399 39 
39 99 
Granitic rocks > 
Calcareous ,, - 
99 99 
Earth France 
Alpine rocks — 
Calcareous ,, — 
Rocks Switzerland 
Trees France 
93 
oo Switzerland 
Rocks — 
Trees France 
Rocks Switzerland 
Micaceous rocks Switzerland 
Rocks France 
Trees Switzerland 
— Scotland 
Rocks — 
Trees France 
Rocks Canary islands 
Trees Switzerland 
— France 
~- Switzerland 
