158 Canadian Record of Science. 
and Canadian Naturalist, 1864). In 1866, Dr. J. Milde, a 
most painstaking Silesian botanist, published his mag- 
nificent ‘ Monographia Equisetorum’ (pp. 600), and sub- 
sequently (1867) the ‘ Filices Europe et Atlantidis,’ includ- 
ing the Equiseta. Mr. J. G. Parker, F.R.S., has more re- 
cently (1887) issued from Kew a ‘ Handbook of the Fern 
Allies,’ in which several of Milde’s species are reduced. 
The object of the present paper is to place before Canadian 
botanists a concise statement of what is known respecting 
our species,—which may be enumerated as follows :—Eq. 
arvense, Linn.; maximum, Lam.; pratense, Khrh.; silvati- 
cum, Linn.; palustre, Linn.; limosum, Linn.; ramosissz- 
mum, Desf.; hiemale, Linn.; robustum, A. Braun ; leviga- 
tum, A. Braun; variegatum, Schleich; scirpoides, Michaux; 
—twelve in number, with several varieties and abnormal 
forms, and one species (litorale Kuhlw.) apparently attribu- 
ted to Canada in error. Some of the species are widely 
spread over the globe, others are of more limited range. 
Of extra-Canadian species, three are South American, one 
is Japanese, one Hast Indian, one doubtfully distinct belongs 
to tropical Asia, and one is Huropean. Of the totai number 
of good species—twenty—we have twelve in Canada, and 
a reputed thirteenth. 
“A map of the hemisphere of greatest extent of land was 
shown, with the distribution of the principal species of 
EKqiusetum laid down in different shades of Indian ink, 
the species of greatest range being shown by light shading, 
the others deeper according to their restriction. The 
Equiseta form a definite belt around the northern hemis- 
phere, stragglers passing into South America and other 
parts of the southern hemisphere.” 
Contributions to the Bryology of the Dominion of Canada. 
By Prors. Kinppere AND Macoun. 
The first systematic attempt to catalogue our Canadian 
Cryptogams was made in 1865 by Mr. D. A. P. Watt, with 
the aid of Mr. Geo. Barnston, Mr. B. Billings, Prof. Macoun 
and myself, and the results were published at the time in 
