1825.] Scientific Noticesr-^Miscellaneou$. 



Proper Vulgar Fractions, of which, when in their lowest terms, 

 neither the numerator, nor the denominator is greater than 

 1,000, still remain in manuscript. The former of these is 

 comprised in four folio volumes of manuscript, lettered Table of 

 Complete Quotients. Mr. Goodwyn had finished their compu..- 

 tation ; and, by subsequent calculations, had nearly, if not en^ 

 tirely, verified the correctness of the whole. He had, also, 

 advanced considerably, in the computation of the Tabular 

 Series, the results being entered, and duly arranged, in five 

 volumes large quarto ; in the last of which, however, the plat- 

 form of his labour is above exhibited. A comparison of the re- 

 spective manuscripts with the two royal octavo printed 

 volumes, entitled Table of the Circles, and Tabular Series, and 

 with the quarto pamphlet, to which this is annexed, will enable 

 any competent judge to appreciate the extent of these classes 

 of Mr. Goodwyn's labours, their utility, and the comparative 

 value of those portions which still remain unpublished. 



Mr. Goodwyn's family, anxious to consign these manuscripts 

 of their revered relative to some institution where they may be 

 occasionally consulted by the friends and promoters of mathe- 

 matical science, do now, with the consent of the trustees of 

 the British Museum, deposit them in the library of that mag- 

 nificent national institution. 



Royal MUitary Academy, OrTNTHiTS Ghfpobv 



7, Important Work on Concholvgi/. 



Messrs. Sowerby have recently issued a prospectus of a new 

 work, which has long been wanting in this interesting branch 

 of natural history. They propose to publish in quarterly num- 

 bers, descriptions, with coloured plates, of all the known species 

 of recent shells. The first number will appear as soon as 100 

 subscribers shall have signified their intention of patronizing 

 the work, which, from the acknowledged abilities of the 

 authors, will (we have no doubt) very soon be done. The 

 descriptions will be given by Mr. G. B. Sowerby in Latin and 

 English, together with such observations as may be required, 

 and the figures by Mr. J. D. C. Sowerby. The work vvill be 

 printed on royal quarto, and each number will contain about 18 

 highly finished plates, coloured from nature, and comprise about 

 100 species; so that, when complete, there will be descriptions 

 and figures of about 5,000 species. The authors are placed in cir- 

 eumstances peculiarly favourable to the production of a work 

 of this kind, from the sale of the celebrated Tankerville col- 

 lection having been entrusted to Mr. G. B. Sowerby, the pos- 

 session of which, though necessarily only for a short time, will 

 enable them to secure drawings and descriptions of many shells 

 that could not otherwise be easily obtained. In addition to this, 



