€3 



Literarij and Philojophical Intelligence. [Aug. 1 , 



(l)rca(Is, whicli f'crcw has a );irgc micro- 

 meter head mimitely divided on its ednc, 

 pnd tk correfpondiiiii; nonius; iij tiiat tlie 

 tciifton of the wire may he adjufted willi 

 the greatell prcciHou, in ordtn- to uhtain 

 its exiu;t pitch. 5, A Aider is lixedacroi's 

 the. top of" the nioveahie- brids^e, and is 

 moved by means of another fcrcvv with 

 very fine threads ; io tliat the length of 

 the wire may be regulated with thcpreat- 

 cft nicety in all cafes, 6, 1 h.o above- 

 mentioned llidcr which is on the top of^ 

 the moveable bi'idge is, adjufted to the 

 fteel rod or fcale, not by light, or by the 

 coincidence of lines ; but by means of 

 mechanical contact againft projcClins; 

 pieces of ficel firmly fixed on that fteel' 

 Icalc, which method is incomparably 

 more corrett. 7, Each bridge can-ies a 

 metallic finger which keeps the wire clofe 

 to the top of the bridge whilft the wire 

 is made to vibrate. 8, The vibrations of 

 the wire are produced by tonchini; it with 

 a piece of cork, with the fame elaftic 

 force, and on the veW fame fpot each 

 time, namely, at the diflance of one inch 

 fron) the immoveable bridge. 



The great work on our national 

 cattle, will be fhortly publifhed by 

 Melfrs. BoYDF.LL AND Co., dedicated by 

 pwmiflion to his Majelly, and prepared 

 tmder the fnperiiitendaiice of ].oKn So- 

 WEUvii.LE. It will hv publilhcd in num- 

 \)ers, in imperial quarto lizo, each con- 

 taining two or more print*, from pictures 

 painted by I\Ir. James Ward. The hif- 

 tory and defcriptions, ufes, merit;-, and 

 defecfs of the cattle, tvith their ada])ta- 

 tion to various forts and fttiiatiims, will 

 be written by Mr. .T( hx LAWRr.Kci;. 



The firft fafciculus of the lon"-expecl- 

 eA Flora Gra?ca of the late Profeflbr 

 SiBTHORr, edited by J Jr. Smith, will 

 make its appearance in' a few days. It 

 ■will conhft of .50 plates, beautifully co- 

 loured, with deicripllve letter- prefs. 

 This fplendid work will form, when com- 

 pleted, ten volumes in folio, containing 

 one thoufand figures, executed by .'^o- 

 werby from the mafterly drawings of Mr. 

 Ferdinand Bauer. 



Dr. Gregory's compendious Cyclo- 

 pedia proceeds according to its original 

 defign, accuuipanied by a degree of pub- 

 lic fupport almoft without example. The 

 firll volume is completed, and contains 

 71 fine engravings; and the fucond will 

 be finiflied by the beginning of the year : 

 forming, in two large volumes quarto, 

 one of the compleletl iind moft ufcfiil 

 works in the Eiiglifii Uiiiguagc. • 



]\Ir. Sancho is about to publilh afiuv 

 fiinile engraving of King Richard the 

 Third and Aiuie his Queen, from the 

 original, whlcii the late Lord Orford al- 

 ways imagined was in exifteiice, and 

 which has been lately dilcovcred iti 

 the library of a nobleman iu a perfect 

 llatc, 



J\Ir. P. Kei.iy, the eminent maftcr of 

 the commercial acadeniy in Finlbury- 

 fijuarc, is preparing with great labour a 

 new siiid accurate work on exchanges, to 

 be publilhcd in one large volume quarto, 

 un(ler the title of the Univerfal Cambilt. 

 lie tykes for his foundation the work of 

 Ivrule, entitled the Hamburgh Contorift;, 

 which he has modernized, adapted to the 

 Englilh ftandard, and confiderably en- 

 larged from uuqueflionabie living autho 

 rities. Among other numerous and im- 

 portant additions, are new afl'ays of »lie 

 principal current coins by which the in- 

 trmlic par of exchange is deternimed. 

 Tlte price will not exceed three guineas ; 

 and the charge to fubfcribers <n ill be half- 

 a-guinca lefs than to the public. 



The Kev. ,T. Konixsox, mafter of the 

 granmiar fchoo! at riuvenftoiidale, a gen- 

 tlcniau to whom the readers of tlic 

 I\Ionthly Magazine are indebted for many 

 valuable communications, is engaged in 

 a new and coniplele work on the Anti- 

 quities of Greece, fimilar in delign to 

 the Roman Antiquities of Dr. Adams. 

 Dilides introducing e^ery thing valuable 

 in the works of Arclibilhop Potter and 

 others, who wrote on Grecian antiqui- 

 ties at a diftaut period, Mr. Robinfon 

 has availed himfcif of the Travels of 

 Anacbaifis, of the works of Stuart, 

 Choifcul (iaufficr, Sonnini, Winkle- 

 man, and other recent writeVs and tra- 

 vellers, to enrich Iiis work, and reader it 

 ufefid and dtfirablc to l^udents and ad- 

 mirers of Greek literature. ^ 



Lieutenant John Rt;&sei.l, of the 

 PCth regiment, propofes to publilh by 

 fubfcription a .Series of INIilitary Experi- 

 ments (jf Attack and Defence, made in 

 Hyde Park, in 1802, under the .Sanciiou 

 of his Royal llighucfs the Commander in 

 Chief, with Infantry, Cavalry, and Ar- 

 tillery. The object of thcfe experiments 

 was to afcertuin iu what time infantry or 

 ca^ alrv could, from given dillances and 

 at named paces, arrive at infantry or ar- 

 tilleiy pofted to receive them, and how 

 many difchargcs they might be liable to 

 receive ; alfo how many difchaf^es of 

 ball cartridge a foldicr can make in a 

 niinuxc, &c. &c. 



A gcn« 



