Arts and Manufactures. ! AA9 
Rome, its R. A. was 4% 6m 595-2, and S. Dec. 7° 11’ 30-6. _ Its hourly 
motion was 15-434 to the East, and 2’ 56” to the North. 
5. Comet of 1844-45; by J.C. Hams, Esq., (Athen@um, No. 956, 
1846, p. 201.)—Mr. Haile has presented to the Royal Society a series 
_of observations on the comet of 1844-45, accompanied by a diagram, 
made by him at Auckland, New Zealand. The comet appeared on 
the 20th of December, 1844, and is said to have disappeared on the 
30th of January following. Its most remarkable feature was, that 
during its greatest brilliancy, the nucleus was not surrounded by the 
nebulous matter, but was situated at the very extremity of the head, 
and at times appeared quite detached. (See farther, Southern Comet 
of December, vol. xlviii, p. 402, of this Journal.) 
6. Planet Saturn.—Sir John Herschel states as a fact obvious 
enough, but not before noticed, that the periodic time of the first satel- 
lite of Saturn (first in order of the ring) is precisely half that of the third, 
and the periodic time of the second precisely half that of the fourth. 
V. MiscELLaneous INTELLIGENCE. 
1. Anastatic Printing —We have before noticed this important im- 
provement (American Jour. Sci., vol. xlix, p. 401) in the art of print- 
ing, by means of which printed or written documents may be multiplied 
in fac-simile to any extent, by a process similar to that by which litho- 
graphic printing is done ; a metallic plate (zinc) being used in place of 
the stone. We take pleasure in laying before our readers a specimen — 
of this art in the annexed pages, from the narrative of Capt. Wilkes, 
copied by the anastatic press of Mr. Robt. P. Smith, (who is agent for 
the American patentees,) 144 Chesnut-st., Philadelphia. As we have 
before described the process, it is unnecessary to repeat it here. We 
have before us numerous other specimens of the art as practised by Mr. 
Smith ; pages from scientific books, illustrations from the London Times, 
copies of manuscripts, maps, music, autographs, and handbills, many 
of which are done with great beauty and clearness. The printing, 
like the lithographic, is slow and expensive, compared with the rapid 
motions of the power press. The art may however be considered in 
its infancy, and great improvements may be looked for, which will ex- 
tend its applications and cheapen its cost. In its present state, how: 
ever, it has a wide and most useful application. The cost of a single 
page like one of those opposite, is now about $10, including the paper 
and press-work for 1400 copies; the same work in common type and 
printing, would cost about $4. It will be seen that this is far less, 
however, than the art of lithography. 
2. Electro-culture, (Jameson's Journal, Jan. 1846, p. 153.)—Dr. Fyfe 
concludes from an extensive series of experiments on the application of 
