58 Review of Cleaveland’s Mineralogy. 
beautiful fine-grained micaceous iron, in large masses, near 
Bellows’ Falls ;—yellow blende, foliated and beautiful, in Ber- 
lin, Connecticut, and near Hamilton College—the latter dis- 
covered by Professor Noyes; it is in veins in compact lime- 
stone ;—red oxid of titanium, often geniculated, at Leyden, in 
Massachusetts, discovered by Mr. E. Hitchcock ;—red oxid of 
titanium, in very large crystals and geniculated, imbedded in 
micaceous schistus, at Oxford, 20 miles north from New-Ha- 
yen ;—siliceous petrifactions of wood, abundant in the island 
of Antigua, recently brought by Mr. Pelatiah Perit, of New- 
York ;—sulphuret of molybdena, at Pettipaug, and at East- 
Haddam, Connecticut ;—prehnite, abundant and beautiful, in 
secondary greenstone, at Woodbury, 24 miles north of New- 
Haven, discovered by Mr. Elijah Baldwin ;—black oxid of man- 
ganese, in great abundance, and of an excellent quality, near 
Bennington, Vermont, and plumose mica, ina very fine graphic 
granite, in a hill two miles north of Watertown, Connecticut. 
The introduction to the Srupy or Geoxoey, deservesa more 
extended series of remarks than it would now be proper te i‘. 
make, after so full a consideration of the previous parts of the 
work. 
Professor Jameson’s elaborate exposition of the Wernerian 
system, is too full, and too much devoted to a particular system, 
for beginners: the sketches of geology contained in Murray’s 
and Thomson’s Chemistry, and in Phillips’s, are too limited, 
although useful: the excellent account of the Wernerian sys- 
tem, contained in an Appendix to Brochant’s Mineralogy, has, 
we believe, never been translated; and we need not say that 
Professor Playfair’s illustrations of the Huttonian Theory, De 
Luc’s Geology, and Cuvier’s, are not well adapted to the pur- 
poses of a beginner; neither is Delametherie’s, nor has it been 
translated. An introduction to geology was, therefore, hardly , 
jess needed than one to mineralogy. Professor Cleaveland has 
performed this difficult duty with great ability, and has brought 
this interesting branch of science fairly within the reach of out 
students. : 
Although adhering substantially to the Wernerian arrange- 
ment of rocks, he has, so to speak, melted down Werner’® 
