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POPULAR SCIENCE REVIEW. 
Jupiter . — This planet is now beautifully seen, and always varying in 
appearance, as far as regards its belts and spots. The third satellite was 
observed by Mr. Wray as a dark spot whilst transiting the planet, on the 
morning of December 27th. The fourth satellite has frequently been 
noticed in this manner. The principal equatorial belt was compared to a 
string of beads on this occasion. (See diagram.) 
Jupiter and Saturn. 
As seen by W. Wray, Esq., F.R.A.8., at 6 h. a.m., vy'dh a 7 inch Object Glass. 
New Planets . — Between February 11th and August 13th, 1861, nine 
new planets were discovered. Since the latter date none have been detected. 
Miscellaneous. — Mr. Lassell has erected his four-foot mirror at Malta, 
and is greatly pleased with its performance. He has detected a new star 
in the trapezium of Orion. The gold medal of the Astronomical Society 
has been awarded to Mr. De la Rue. 
CHEMISTRY. 
I. Pure Chemistry.— Some curious illustrations of the divisibility of 
matter, which have recently been drawn from chemical and microscopic 
science, will aptly commence our retrospect of progress made during the 
past quarter. The results do not, it is true, throw any light on the long 
debated question as to whether matter is capable of infinite subdivision, or 
whether it is built up of an aggregate of almost infinitely minute, but yet 
