Bibliography. 189 
eral species in alphabetical order, with their various localities throughout 
the world. From the correct orthography of our own names, we may 
judge of the accuracy and care with which its pages have been pre- 
pared. ‘To mineralogists who may travel abroad, and to those who have 
cabinets or make exchanges, such a work is obviously highly important. 
The deciphering of illegible labels is a common trouble with the min- 
eralogist not well versed in the languages of Europe; here Leonhard 
supplies a ready aid; besides giving some idea of the geographical posi- 
tion of the places. It also enables one, through the associated minerals, 
often to ascertain the locality when unknown ; and it supplies the means 
of comparing our own localities, and the associated minerals with those 
of the same species abroad. Asa book of reference, therefore, Leon- 
hard’s work will be found highly convenient, and the more so for its 
concise, systematic, tabular mode of arrangement. In carrying out 
his plan the localities are first given for Europe, mentioning in order 
those of the separate countries or departments ;—as for example, under 
Pyrites, severally, Spain, France, England, Scotland, Ireland, Nether- 
lands, Switzerland, Denmark, Sweden, Norway, Prussia, Hanover, 
Hartz, Saxony, Hesse Cassel, Hesse Darmstadt, Nassau, Baden, Wur- 
temberg, Baiern, Austria, Italy, Greece, Russia, Poland. Then the 
continents, Asia, Australia, Africa, and America, including under the 
latter the subdivisions, Greenland, British North America, United States, 
Mexico, Peru, Chili, Brazil, and Uraguay.—The work closes by a second 
table containing all the places mentioned as localities, arranged in alpha- 
betical order, under the different countries to which they belong. 
15. The Botanical Text Book, for Colleges, Schools, and Private 
Students ; comprising, Part I. An introduction to Structural and Phys- 
iological Botany. Part II. The principles of Systematic Botany, with 
an account of the chief natural families of the Vegetable Kingdom, and 
notices of the principal useful plants. 2d Edition, with more than a 
thousand wood cuts. By Asa Gray, M. D., Fisher Professor of Natu- 
ral History in Harvard University. 509 pp. 8vo. Wiley & Putnam, 
New York, 1845.—This second edition of a work that has already 
gained a high reputation, is very much enlarged and improved, both in 
subject matter and illustrations. The author states in his preface, that 
the first part on structural and physiological botany, has been mostly 
rewritten and amplified to nearly twice its former extent; and the 
numerous figures added have given increased simplicity and clearness 
to this part of the subject, while at the same time it is rendered more 
complete. ‘The chapters upon the principles of classification and the 
natural system have also been recast and somewhat enlarged ; while 
those illustrative of the natural orders have been condensed, without, 
