SHORT NOTES. 115 
examination of specimens (from only four localities) shows that both 
forms vary; therefore the subsecundity of the leaves cannot safely 
be used as a distinguishing character. This species belongs to the 
ous 
species of the genus. 
Not far from the same place on Ben Lawers I gathered Timmia 
i far as la 
aware, it was only previously recorded in Britain from the banks 
of the Isla, in Forfarshire. I have just been examining about a 
score packets of Jimmie, and I find in examples from different 
places that the depth of serration of the leaves varies, as does also 
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he distinctly sheathing orange base 0 austriaca, 
Hedw., is a good character, though in specimens of 7’. megapolitana, 
Hed om Canada, the characteristic shorter white shea 
base was distinctly lutescent approaching orange, but not by any 
means as deep in a riaca, Hedw. The serra- 
tion is denser and generally coarser in T. megapolitana, Hedw 
in 7’. austriaca, ar. bavarica, Hessle ZT. 
mallous tendency. 
Schimper says that there is only another species of the genus 
which occurs in America. Is it Rau and Hervey's Cata- 
logue, and if so, under what name, as this genus is not in their 
catalogue ? 
SHORT NOTES. 
mca, Tests ror Lronens.—Most lichenologists have pro- 
CHEM 
bably found the solution of chlorinated lime to be a very agg 
have found it advisable to previously test it on the sorediate form 
of Pertusaria velata, which is easily obtained, at least in the south 
