ey 
re Miendibeel Intelligence. 301 
The above may be Pe to exhibit both the literary and scientific 
merits of the work. We would not however do the author injustice, and 
therefure _ a few siden Statioon The italies beyond are ours. 
Page 160 we read: “Arsenic acid (AsO) is a white mass which 
readily eet dist and dissolves. {t will not volatilize at a low red 
heat, ‘nor wild it decompose, Exposed to a strong heat it is decom 
yielding oxygen, and passing into arsenious acid.” Under arsenious acid 
We are told that “ Upon charcoal it instantly volatilizes, and when 
the characteristic garlic smell is perceived.” 
Of silver is said (p. 163), “it is not oxydizable, neither at common tem- 
peratures nor at those which are considerably higher.” The merest tyro 
in chemistry will henceforth have an infallible means of recognizing this 
useful metal. On page 59, in donttinn the behavior of silver on char- 
coal before the blowpipe, the language of Plattner and ) i 
wd followed, and also on page 264, where Blanford’s account of the 
tons of native silver is copied—the well known red deposit of oxyd 
Of sven formed when the metal or its oxyds are strongly heated on char- 
coal is of course duly noticed ; but in the chapter on Special eactions, 
which oe to be the most original part of the work, in giving the 
Gtieral characters of his “ninth group” of metals, viz., copper, silver 
and gold, Prof. S. states that: “In the reduction of the oxyd of this 
Stet uo sublimate is visible on charcoal.” 
Platinum is repeatedly said to be infusible, We are however in the 
it to our classes the fusion of a fine wire of this metal in 
the flame of outh seme in accordance with the observations of 
Fiedler, Plattner ror others, 
According to the author, boracie acid bleaches brazil-wood-paper, bu 
Nothing is said of the action of sulphurous acid, the latter having as 
‘hing effect while the former has not. We also learn that phosphorie 
acid tinges it yellow i in the same manner as hydrofluoric acid. 
~ blowpipe i is concisely dedertbed § in the pepter language. 
: , th rig: 
. description, It “is sige of the following parts : (fig. 1) A is a linle 
"ervoir made air-tight by grinding the part 'B into it.” 
After 178 pages _ a pcoper atch on the blowpipe, the author 
; Fishes his labors by copying bodily, typographic PAPO ineluded, about 
i a from Blantord on the Behavior of — 2 
8 preface thus acknowledges; we quote 
Saple of his style: “In Part Third of thi ee eaeel . 
icit deseri 
Pa 109, the student will find a suflicient y ae 08 ciate Healy t0 
pe s ubstan 
Pk, tarred of _ P Roem g tabular statement of those 
—_——. 
as an 
—o we ores y Scheerer and Blanford’s excellent little 
— pe—will be of t benefit, asa vehicle for ron- 
tiation, vie edn se jime—or daring the hurry of an examina- 
precludes ona rove perusal of the more Jengthy description in 
a text,” 
