284 Tue Microscope. 
chlorophyll remains in the leaves, and the sugar in the pulp of the 
raisins. Dr.Schweinfurth has determined no less than 59 species, 
some of which are represented by the fruits employed as offerings 
to the dead, others by flowers and leaves made into garlands, and 
the remainder by branches on which the body was placed, and 
which were enclosed within the wrappings.”—President’s Address 
Section Biology, British Association. 
To DistincuIsH OLEOMARGARINE FROM ButTrer.—J. Horstler 
recommends the following procedure: A piece of oleomargarine, 
the size of a hazelnut, is placed in a test-tube, and the end made 
air-tight. Into another test-tnbe a like quantity of butter is treated 
in the same way. When both test-tubes are held in the hand the 
oleomargarine soon liquefies, forming a clear solution; whilst butter 
requires double the time for solution, and when dissolved is not so 
clear as the oleomargarine solution. When the tube is filled one- 
third with ether, the oleomargarine is easily dissolved, and does 
not produce any turbidity or precipitate on the addition of alcohol. 
Butter when treated in like manner yields a precipitate. 
Gorp Crystats.—Although crystals of gold occur in Nature, 
they have never been produced artificially. By allowing a solution 
of the double chloride of gold and sodium to stand, Mr. W. N. Allen 
has observed that perfect little regular three and six sided tablets of 
metallic gold are slowly deposited. The crystals were about 0.003 
of an inch in diameter, and the upper surface shows a strong reflec- 
tion. 
WorkING witH THE CamEeRA Lucrpa.—Playfair gives this ad- 
vice in the English Mechanic in regard to the camera lucida: 1. In 
working with a camera lucida, one of the best plans is to use two 
lights, one to illuminate the object, and the other the paper. A 
candle does perfectly as the second source of light. 
NEWS AND NOTES. 
Two new botanical journals have appeared in Italy, De Notaris 
and Malpighi. 
Ir 1s stated that Carl Zeiss of Jena, recently placed in a box, 
with his own hands, the ten thousandth microscope he has made. 
It Is CONCEDED, says the San Francisco Call, that the Lick tele- 
scope, when completed and mounted in the Observatory prepared 
