462 Notices respecting New Books. 
tion of the Teeth of the Delphinus Gangeticus. By Sir Everard 
Home, Bart. V.P.R.S.—XXII. Description of an Acid Principle 
prepared from the lithic or uricAcid. By William Prout, M.D. 
Communicated by W.H.Wollaston, M.D.F.R.S.—XXIIL. Astro- 
nomical Observations and Experiments, selected for the Purpose 
of ascertaining the relative Distances of Clusters of Stars, and of 
investigating how far the Power of our Telescopes may be ex- 
pected to reach into Space, when directed to ambiguous celestial 
Objects. By Sir William Herschel, Knt. Guelp. LL.D. F.R.S. 
—XXIV. On the Structure of the poisonous Fangs of Serpents. 
By Thomas Smith, Esq. F.R.S.—XXV. On the Parallax of « 
Aguile. By John Pond, F.R.S. Astronomer Royal.—XXVI. On 
the Parallax of the fixed Stars in Right Ascension. By John 
Pond, F.R.S, Astronomer Royal.— XXVII. An Abstract of the 
Results deduced from the Measurement of an Are on the Meri- 
dian, extending from Lat. 8° 9’ 387-4, to Lat. 18° 3’ 23-6, N. 
being an Amplitude of 9° 53' 452. By Lieut. Col. William 
Lambton, F.R.S. 33d Regiment of Foot. 
A Treatise on Marine Surveying. In two Parts. By Murdoch 
Mackenzie senior, late Marine Surveyor in His Majesty’s 
Service. Corrected and republished with a Supplement by 
James Horsburgh, F.R.S. Hydrographer to the Hon. the East 
India Company. Svo, pp. 183. 
The Treatise on Marine Surveying by the late Mr. Murdoch 
Mackenzie, of which we are now presented with an improved and 
enlarged edition, has long maintained the character of the most 
scientific, useful and exemplary work on that branch of nautical 
knowledge ever published in this or perhaps in any other country. 
It has nevertheless not been reprinted since its first appearance 
in 1774, and is now extremely scarce. 
To aa therefore, who are curious to reach the summit of 
nautical science, and to naval officers in general, a republication 
of this work, by an editor so able and well-informed as Mr. 
Horsburgh, cannot fail to be highly acceptable. Although the 
original work has been preserved in the form given it by the au- ' 
thor as nearly as possible, we have met with several important 
alterations which appear to us to have been rendered essen- 
tially necessary by the rapid improvements Navigation has lately 
received from the introduction of chronometers and other means, 
and have been introduced by the ingenious editor with a degree 
of accuracy and skilfulness, to which we beg to bear the humble 
tribute of our most unqualified approbation. 
A Supplement has been also added, containing some interest- 
ing examples, with precepts relative to marine surveying, and 
other information applicable to the advancement of young officers 
in useful knowledge. iy The 
