134 Notices respecting New Booh. 



But a glass tube is not necessary, as, without seeing the igni- 

 tion, the explosion will be known to take place by the noise 

 which it makes, and the movement of the mercury in the 

 gauge. 



[To be continued.] 



XXIV. Notices respecting New Books. 



An Appendix to the First Volume of an Introduction to Practical 

 Astronomy. By the Rev. W.Pearson, LL.D. F.R.S. Treasurer 

 of the Astronomical Society. 



THE Rev. Dr. W. Pearson has just published an Appendix to 

 his First Volume of An Introduction to Practical Astrono- 

 my, containing eleven sheets ; in which he has shown that his series 

 of XIV Tables, computed from constants of aberration and nuta- 

 tion approved by Zach, Delambre, Bessel, &c. will determine the 

 corrections due to any other coefficients that may be deemed pre- 

 ferable, in the present improving state of practical astronomy ; and 

 without altering the mode of computation otherwise than by the in- 

 troduction of one constant logarithmic factor in each operation, 

 which converts one result into the other; and thus renders these 

 tables permanent under all the changes of coefficients, which future 

 observations may render necessary. The author has also taken 

 occasion to correct some erroneous computations that had before 

 escaped his notice ; and has given an additional list of typographi- 

 cal errata^ He has likewise added a catalogue of 520 zodiacal stars, 

 including their subsidiary numbers, for facilitating the computation 

 of their corrections ; as well in longitude and latitude, as in right 

 ascension and declination ; all which stars are subsequently arranged 

 in the order of right ascension, in a table of fourteen quarto pages, 

 in such a manner, that it exhibits those stars in succession that are 

 liable to suffer occultation at any given time, by having reference 

 only to the moon's longitude and place of her node, as given in the 

 Nautical Almanac : and what renders this classification extremely 

 convenient, those stars that will suffer an occultation as observed in 

 England, or in the same parallels of latitude, are 1 distinguished from 

 those that will be seen occulted on other parts of the globe. 



We are authorized to state, which we have much pleasure in 

 doing, that the second volume, describing the instruments used in 

 practical astronomy, with the methods of adjusting and using them, 

 is in a state of great forwardness, and will probably be ready for 

 publication in the course of three months from the present time. 



On the Curative Influence of the Southern Coast of England, especially 



that of Hastings : with Observations on Diseases in which a Residence 



on the Coast is most beneficial. By William Hauwood, M.D. 



London, 1828 ; post 8vo, pp. 326. 



This work is an interesting and useful combination of scientific and 



medical information, adapted to the use of invalids who are desirous 



of 



