NOTES OF ALG. 205 
equally large as those found near thesea level. Several were 
observed at high elevations which have not hitherto been 
seen lower, for instance Staurastrum Incus, and S. conver- 
gens, Cosmarium Cucurbita, and C. orbiculatum. As these, 
however, occur also in the southern parts of Britain, they 
may yet be detected at Aberdeen. 
I. In a marsh in the upper part of Caulochan Glen, at 
2742 feet, the following were found: 
tons Diane. 
Cosmarium margaritiferum, C. ornatum. 
Gleoprium mucosum. 
Staurastrum orbiculare, S. tricorne. 
To Mr. P. Grant I am indebted for the following lists of 
Species, collected in Banffshire, and on its borders. 
Il. Near Loch Builg, 1600 feet more or less. 
Closterium Ehrenbergii, C. moniliferum, C. striolatum. 
Cosmarium Botrytis, C. crenatum. 
Euastrum affine, E. gemmatum. 
us quadriseriatus. 
2 rum orbiculare. ` 
Aimer granulatus. 
_ IIL. Glen Livat, altitude unknown. 
ium acerosum, C. Digitus, C. onn, C. lineatun. 
Cosmarium Botrytis, c. mignon fy orn 
