

REVIEWS. 217 
portance to other northern countries, where lichens are abundant; and 
Mr. v. Post's observations on the so-termed “ giant-kettles” (kettle- 
Shaped excavations in rocks, with whorl-like or spiral striations, evi- 
dently produced by water-whorls turning stones around along with them) 
as drawing their origin from the waters rushing vertically down through 
local cracks in glaciers (the so-termed ‘‘ moulins ”) throw farther light 
on the great glacial epoch and the monuments it left behind; no doubt 
also North America will furnish numerous instances of the phenomena 
interpreted so successfully by Mr. v. Post. 
ough we are now connected by railways with the Swedish capital, I 
must confess that the last volume of the “ Transactions of the Royal 
new' series, or that for 1865-66; it would therefore strictly fall behind 
the limits of this review; but as it bears the year 1867 on the foot of the 
title page, I presume that some of its parts have been published so late 
a 
y £ 
One hundred and five species are described in this work by the learned 
author, who through many years made this genus his favorite study, and 
whose well deserved reputation will recommend his work to the atten- 
tion of all botanists, as being that of the first authority on the subject. 
Mr. Zetterstedt has examined the flora of Smaland (a province of Swe- 
n). To Durir and Nordenskjold we owe contributions to the geogra- 
While Nordenskjold has published a geological description of it (with 
charts and profiles), and Lindstróm has described its Triassic and Juras- 
sic fossils. Of the contents of the later volumes, if such have appeared, 
t h 
thing has been published during the biennium, and the same must be 
Said of Sundevall’s unfinished “Birds of Sweden.” You will find in it 
plates), containing also an elaborate synopsis of all known genera 
f “Whal Whales,” among which the author distin- 
ess than ten generic subdivi As the memoir is written 

