652 
ARSENICAL AND ANTIMONIAL SPECTRA. 
Mr. W. Crookes, referring to metallic spectra, says:— 
“ Unfortunately, I have not succeeded in obtaining any cha¬ 
racteristic spectrum from arsenic in any of its compounds. 
A delicate spectrum test for this metal would be of the 
highest importance to toxicologists, but it appears, with the 
means I have employed to examine it, to give a continuous 
spectrum. Antimony, likewise, gives no better results.” 
TEST EOR THE PURITY OE CHLOROEORM. 
M. Hardy states that, if a piece of sodium be thrown 
into chloroform and remain unattacked, the chloroform is 
pure. This is dependent on the fact, ascertained by Heintz, 
that the alkaline metals do not act on chloroform. But if it 
contain alcohol or other substances susceptible of alteration, 
certain gases are disengaged. 
LONGEVITY OE THE HORSE. 
The Courrier de Verdun mentions a rare instance of lon¬ 
gevity in the equine race, M. Collas-Gattelet, member of the 
Council-General of the Meuse, having just lost a horse at 
the advanced age of forty-five. 
LONGEVITY OF ANIMALS. 
According to naturalists, the longevity of animals may 
be classified as follows:—Rabbits, 6 to 7 years ; squirrels, 
7 to 8; foxes, 14 to 15; cats, 15 to 16; dogs, 16 to 18 (that 
of Argus, the dog of Ulysses, mentioned in Homer, was 20); 
bears and wolves, 18 to 20; rhinoceroses, 20 to 22; fowls, 
25 to 28; porpoises, 28 to 30; rooks and camels, 100; 
tortoises, 110; eagles, 120; swans, 160; elephants, 400; 
and whales, according to Cuvier, 1000 years. 
ARSENIEEROUS SULPHUR. 
A form of sulphur, according to Dr. Phipson, is found at 
Solfatara, near Naples, which contains a notable quantity ol 
arsenic and selenium. It may be distinguished from ordi¬ 
nary sulphur by its colour, which is orange, and by being 
