76 
following remarks and corrections are collated from a copy of the 
work of which parts have been given practical trial. That the 
supply of errors is in any way exhausted is not to be supposed, 
for each attempt at use in determination unearths a large crop of 
mis-statements and oversights. 
In the first place there are hosts of small blunders—typo- 
graphical errors they might, perhaps, be called, if they were not 
so numerous and confusing. Errors in the spelling of scientific 
names occur as follows: 
Siphotychium (p. 31, also p. 34), for Siphoptychium; Ellisiana 
(p.98), for Al/istanum,to agree in gender with Lamproderma, robusta 
(p. 99), for robustum ; cinera (p. 150), for cinerea; Trevelyana (p. 
202), for Zrevelyan, the original name; melanospora (p. 325), for 
melanosperma, the original name; dealbata (p. 207), for dealbatum ; 
Ceinkowskia (p.197, p. 307, p. 336 and p. 337, twice), for Cienkowshia. 
In the preface and index this generic name is spelled correctly. 
And the arithmetic is no better than the spelling. Of twenty- 
five genera containing more than one species the number of species 
is wrongly stated in eight: Zuéulima 11 (correct number, 12); 
Enteridium 3 (5); Clathroptychium 3 (4); Cribraria 19 (20); Stemo- 
nitts 23 (24); Perichena 9 (10); Ophiotheca 9 (10); Badhamia 18 
(17). The author says, “ Species 3,’ under Reticularia. As only 
R. lycoperdon appears, we must infer that one species was counted 
three times, or that the other two were lost, perhaps by the printer. 
It is, of course, a matter of small importance whether the number 
of species is correctly given so long as the species are correctly 
described. The above facts suggest, however, the very important 
question whether the author was in the same state of mind when 
he counted (?) the lines on his micrometer as when he failed to 
count his species. 
In the matter of citation of authorities for specific binomials 
this is a pioneer work. ' All the systems previously proposed seem 
to be used in different places, and several new ones. Through 
this peculiar combination of methods the result is reached that 
more than a quarter (118 out of 427) of the species have after 
them the expressive abbreviation “Mass.” But all theories fail of 
a complete explanation of this great massacre of ancient aahe ; 
ties and old friends. 
