Literary and Philosophical Tnfelligenee, 



I816.] 



Various Objects of Experimental Plii- 

 loM)|)liy ; priuted at Florence in 1787. 



Tiic Abbe iMai, to whom the ledriied 

 world alreatly owe tlie discovery of a 

 manuscript of Homer, with figures, and 

 several considerable fragments of Ci- 

 cero, the works of Julius Fronto, Sec; 

 Las also fousid in t;i3 Ambrosiaii library, 

 3. work cntilled, Epitome Diuuj/sii Ha- 

 lycarnasseiisis. It supplies the lost 

 books of Livy. 



Au edition of Polilian is printed at 

 Florence, with ]>oe(ry, taken from aii- 

 tieut manuscripts. 



GREECE. 



Desiring to restore leaniingto Greece, 

 the Emperor Napoleon caused a rej^ular 

 Newspaper, printed in modern Greek, 

 to be establislicd at Corfu. Aficr we 

 bad possessed ourselves of a part of the 

 Ionian Islands, we eslablisiieil a rival 

 Gazette at Zante, under the title of the 

 Ephcmerides of the Ionian Isles Deli- 

 vered ; and, in point of paper and typo- 

 graphic execution, it far excelled the Ga- 

 zette of Corfu. Of their relative merits 

 it is net necessary to say mucli, the Ga- 

 zette of Corfu was the echo of the ]\lo- 

 nitcur, it possessed an imiiseiise circu- 

 lation, and made the name and glory of 

 the French emperor familiar to the na- 

 tions of the Enst. The Ephcmerides of 

 Zante was undertaken on diamctrieally 

 different principles ; if tJie Corfu Gazette 

 declared an oliject to be white, the 

 Ephcmerides instantly proclaimed it to 

 be black, and vice versa. The termina- 

 tion of the power of Napoleon having 

 freed it from control, it is now likely, 

 under the care of Sir William G '11, to 

 become important to all lovers of letters, 

 as it will in lulu e regularly pnblisli all 

 intelligence from the Continent of 

 Greece, and give an account of the la- 

 bours and discoveries of scientifu; tra- 

 vellers; and will, we hope, rear the mo- 

 nument, of which the fomulatiiins were 

 laid by the Etnperor Napoleon, and 

 retive the anci(;nt spirit of Greece. 



AMl■■,HIc^^, 

 Sjeperitnnits vuide witli the farn-e Bm-TV- 

 tii^-Olass of Dicldnsou College, under 

 the (lireiiioii of Professor Coap'-r. 

 'i'his lens was i)nrchascd by the trus- 

 tees of Dickinson college, from thi! son 

 of the late Dr. I'rieslh-y. It was ma<lc 

 "by the same Mr. J'arker, of J 'leet-slnvt, 

 I^oiidon. who constructed tiie celel)rat<'il 

 burning-glass scMit, among other pre- 

 sents, to the Emperor of China; and 

 which was esteemed the most powerful, 

 iiigtnuitj and pcrscvciunco hud pro- 



63 



duccd. The burnin.r-g'ass of Diekinsou 

 college may be considered as one of tha 

 best in the United States. It is made 

 ol Hint glass, and compounded of two 

 lenses, both double convex, of solid 

 glass. 



The diameter of the large lens is in 

 the frame . . . 16j- inches, 

 surface exposed . lim- 

 its thiclaicsN at the centre, l-^^ inches, 

 at the edge, . . ^tasinch. 



Its focal distance, 2 feet ll^^ inches. 



'J'he diameter of the small lens is 6^ 

 inelics. 



Its focal distance, I foot 5^ Inches. 



Both glassc's are fixed ia a woodbu 

 frame, vvl-ieh tm-ns on a pivot and slides 

 on a brass bow, and can be moved witli 

 ease horizontally or pcrpendicularlj'. 

 The smaller lens is plac.'d at such a 

 distance from the large one, as that th^ 

 diauieter of a cone of rays falling on the 

 small lens, is equal to the diameter of 

 the small lens. 



Substances fused, uith thdr weight and 

 time offusioii^ 



Farcnheil's thcrniomet(;r at ciglity-sis 

 degrees in tlie sun, and scvenly-four 

 degrees in the shade. 



Silver — 7 gr. melted in two seconds. 



Copper — 22 gr. melted in thirty se- 

 conds. 



Bar iron — 18 gr. partly melted in fiv» 

 minutes. 



Antimony — 25 gr. melted instanta- 

 neously. 



Flint glass — 5 gr. melted in forty 

 seconds. 



Green glass — 6 gr. melted in thirtj- 



fivO SCCOiirls. 



Farenheit's thermometer at one bun- 

 dled and one degrees in the sun, eighty-, 

 six in the shade. 



Crystal of liniesfoiie — in four minutes 

 partly reduced to lime. 



Glass colonrcil by gold — in thirty se- 

 conds ran into a beautiful globule of 

 variegated colours. 



Blue clay from Jersey — 6 gr. in one 

 minute nielted and ran into a globule. 



Asbestos — became instantaneously 

 red liot, but not otlierwise alfeotcd. 



Clay and lime — in equal proportion* 

 instantaneously melted into a glass 

 globule. 



liimc and quartz — 3 gr. each, melted 

 in thirty seconds. 



(^lay, quartz, and lime — 3 gr. oucli, 

 in thirty»livc seconds melted into a glass. 



IMica — in ten seconds partly nielted. 



Precious serpi/ntiiie — in two minutes 



chanjjeil in colour and reUitcud in weiijht. 



Piatiiu 



