308 Scientific Intelligence. 
sed by HCl in presence of ether one the fatty acids obtained 
by distilling off the ether, were repeatedly crystallized from alco- 
y re serene the fractional crystallization, there was 
Shenae beside olei acid, an acid of the formula C,,H,,O, and 
fusing point 57°5° as one extreme, and —— C,,H,,,0,, of fusing 
128" 29 
point. 72°2° as the other, both of which are new. To the latter 
J. Ch. 
the pegs anne the name Theobromic acid.— Soc., xxxiii, 
38, Jan. G. F. B 
10. On. a new Class of Acid tain iar ee has studied a 
new class of ee salts, the acid acetates which acetic acid’ 
itself plays the part of water of cotinine, Their general 
formula of the sodium salts is C,H,Na0,(C,H,0 )—H, oO, where 
n 
= = or 3.- Thus, a salt crystallizing in small flat efflorescent 
prisms has the formula C,H sNaO,(C,H ,0,)4(H,O)$. Another of 
the second class, where ~ Mas, is in small efflorescent prisms 
of the formula C,H,NaO,(C,H,O,)3(H ,O)42.— Bull. Soc. ~*~ be 
xxix, 153, Feb. 1 1878. 
ll. Electro- Magnetic and pheno imetric Absolute Mumwoneda 
ae the continuation of a paper with the above title, Professor 
F, WEBER Psat ia that the seg of the Siemen’s mercury 
unit of resistance lies between 0°9536 x 10° ("a) ‘oad 
0°9550 * 10” ( Teen) and that the value of the British unit is 
the value asserted, 101° et . Professor Weber also dis- 
ome the experiments of Favre on the quantities of heat devel- 
by various electromotive forces in their circuits during the 
i f zinc. F 
of a mercury calo rimeter, an instrument which Weber sz aeattg” 
os ee. Mauien 1878 ape a 
12 agri Ee lobstessare ER Wricut and Mr. = 
Mary’s Hos ital Tondon, pet made a first report 
to the Like Chemical y* of their _investigation on this 
chief point established by their paper is the general 
principle that “ ‘that reduc agent begins to act cat the lowest 
of ¢ experiments are given on — reduction of ¢ cupric ‘oxide and 
