203 
to make haste more slowly? In particular, the proper determination 
of low Algae and Fungi requires not only critical study of many 
forms with the best appliances, but also a good acquaintance with the 
literature of the subject at first hand. 
It is not my vocation to look after Cryptogamic botany, and I 
am sincerely desirous to avoid giving offence. Yet I will venture a 
few remarks upon Mr. Wolle’s papers on Fresh Water Algae. 
“The late Dr. M. G. Thuret” was not a Doctor, and his name 
was Gustave Thuret: the M. stands for Monsieur or Mr. 
When specimens sent, through a friend, to M. Thuret’s surviving 
associate, Dr. Bornet, were determined by the latter, a reference to — 
this might not be amiss; and such as were pronounced on such 
authority too poor for identification might well have been let alone 
for the present. 
Gleocapsa Ttzigsohnit being a MS. name communicated by Bornet, 
this might have been mentioned. 
“ Vibrio Rugulo” is a mistake for V. Rugula; “‘ Chthonodlastus 
Vaucheria,” for C. Vaucherit. “ Pleurococcas minuatus,” we may sup- 
pose means Pleurococcus miniatus, with a mere misprint in the 
generic name, the specific name turned into something unmeaning. 
“ Chlorococcum humilicola”—a dweller upon something humble !— 
stands for C. humicola, an inhabitant of the ground, and the genus ~ 
is Cystococcus. 
“ Polyedron”’ is Polyedrium of Negali. 
The new species of “Conferva,” with such characters as are 
given, and with no indication of what this genus is taken to contain, 
cannot be deemed valuable contributions to Phycology. 
“ Hassel ” is a name which does service for Hassall. : 
“ Bulbotrichia Onokoensis”’ is founded on the young thallus of a 
Lichen. ~ 
“ Chlorococcus rubrapunctus, n. sp.” has the name of the species 
somewhat wonderfully made. 
Lingbya : For a species we have “ L, Cincinnati,” from Colorado. 
Does this stand for Z. cincinnata ? 
“Scytonema badium. . . . This plant has somewhat of an 
indefinité character, not unlike Sc. ¢runcicola ; sometimes it assumes 
the characters of a “ Zolypothrix.” It may well be likened to both, 
as it is Zolypothrix truncicola of Thuret. “ 7. Bulanheimii” is a 
lapsus for Bulnheimii, Rabenh. 
“ Kalodictyon” and “ Poterophora” are new genera, supposed to 
be Algae (and the first probably is something of the Cladophora 
sort), but without proof of it, or fructification. They are, therefore, 
lumber. 
The third part has Latin instead of English characters, upon 
which some comments might be made; but they might seem captious. _ 
On p. 190, Mr. Austin’s fine powers of discrimination, so exten- 
sively shown in the Mosses, are brought to bear again upon our 
common grass, Danthonia spicata, and D. Faxoni is made upon what 
the collectors and the specimens assure us is a mere form of the 
original species, maturing at about the same period. 
; A. Gray, 
