Geology and Natural History. 381 
sketch of the earth’s Vegetation in its relations to Climate or 
Comparative Geography of Plants, upon which Prof. Grisebach 
of Géttingen has long been occupied, has just reached us, and ma 
hereafter receive the further report which this elaborate treatise 
deserves, especially if Ney cg hes translation which has been 
called for should appear. The work is strictly a geography of 
lants, and it treats of the ajinatc an at of the twenty- 
our regions into which the author divides the rth, so that it is 
upon a plan wholly different Bois Alphonse DeCandolle’ s — 
A. 
12, Mr. Ravenel’s interesting notice of the Arrangement we 
Morphology of the Leaves A Laptisia perfoliata, m set forth by 
the present writer in the December number of this Journal, is 
reprinted here, as well as in ie Annals and Mscuaine of Natura 
History ; and ‘the perusal brings to our view an abominable mis- 
print, which makes utter nonsense of the last ieeype af the 
penultimate paragraph, to be corrected as follow 
Correction.—In vol. ii, No. 12, p. 463, in ee 11, fox -¢ fasion” 
read torsion ; line 12, for “ adopting * read adapti: ng ; ; So that t 
sentence will read: “in the torsion of the axis and the distri 
tion of the stomata, adapting me foliage to its vertical position” 
corrected. Cam mbridge, 1872. Published by B. Pickman Mann.— 
is m , With corrections and a few additions, 
of the Catalogue known familiarly as “ Mann’s Exchange List, 
‘h has been of great service to all collectors of American 
plants. Since the running numbers have not been changed, it will 
be possible to use the old and the new editions interchangeably. 
The “ typographical and other errors,” which have been found and 
corrected, are over one hundred and fifty, and Mr. Mann, in his 
Prone, renews his brother’s request that persons using the . 
ogue would send him notice of all errors discovered 
14. Illustrated Catalogue of the ao Comparative Zo- 
dlogy.” ypplement to the Ophiuri oa Astrophytide ; 
Trropore Lyman .—(Concluded from page 225.) @ part, of 
(p. 50). 
excuse my answering it at greater length than its somewhat 
terse” language—to use i 
