44 Review of Philiips’s Mineralogy. 
A good chapter on the Chemical reactions of Minerals occu- 
pies from pages 85 to 100. 
The descriptive part of the Treatise commences with the 
“ Metalloids,” sulphur, selenium, carbon ; then follow the Metals ; 
next the T'ellurides ; then in order the Antimonides—Arsenides 
—Selenides—Sulphides—Oryds, earths and acids—Hydrous 
oryds, earths and acids—NSilicates—Hydrous silicates— Tanta- 
lates, niobates, scheelates, molybdates— Arseniates, phosphates— 
Hydrous arseniates, phosphates—Sulphates—Hydrous sulphates 
—Chromates— Vanadiates—Sulphates with Carbonates—Car- 
bonates—Hydrous carbonates— Nitrates — Borates—F luorides, 
Chlorides, Bromides, Iodides—Resins, Coal. 
The descriptions are given with precision and sufficient brevity. 
The lists of localities are mostly mere lists of names, with sel- 
dom any mention of the associations of the species. As is nat- 
ural, American localities are given less definitely than those of 
Britain or Europe, when not altogether forgotten. Of Rutile, it 
is said that it occurs in North America, certainly an important 
fact to the mineralogists of England, as well as to those of North 
America itself. 
The analyses introduced are rather numerous, but no referen- 
ces are added to the Journals in which they were originally pub- 
lished; neither is there more than a single chemical formula 
given, although a species may be of doubtful composition, or, a8 
in the case of Scapolite, it may actually include several com- 
pounds, 
Along with the names of species in the heading preceding the 
descriptions, the names of certain mineralogists are usually mef- 
tioned. But it is remarkable that the old rule of giving an author 
eredit for his work is set aside. Since the enactments of certain 
laws relating to nomenclature by the British Association, it has 
been supposed that in Britain at least, there was a high sense of 
delicacy on this point. But the authorities mentioned by Messrs. 
Brooke and Miller are often only the names of certain authors of 
Treatises, to the exclusion of those of original observers. 'Turn- 
ing to Gibbsite, we find with some surprise, that the species is at- 
tributed to Phillips, and Gibbsit to Mohs, Hausmann;and Haidin 
ger, and our friend Dr. Torrey is forgotten. Cancrinite of Rose 
is y a same _ attributed to Hausmann ; Scherlomite of Shep- 
ard to Hhammelsberg; Diaspore is followed by “ Phillips, Haiiy; 
instead of “ Haiiy, Phillips,” in their proper aasiie Hornblende is 
attended by the name of Phillips alone; Apatite is attributed to 
Phillips, and then Apadit to Hausmann, Haidinger, again. Such 
a use of names \is calculated to mislead, unless understood 10 
mean simply that this or that author has the name in his book, 
which is all that the authors could have intended, and which 
principle should have been somewhere announced. 
