ITALY. LETTER vnr. 83 



per la tfofcana, by which he ' has much illuflrated 

 ?-he Natural Hiftory of his country. 



I faw in his cabinet all the rocks, flones, earths, 

 marbles, petrifactions, ores, and lavas of Tufca- 

 ny, which he has defcribed in his journey. I no- 

 ticed in particular the following. 



a. Chalcedony^ from Maremma di Volt err a in 

 Tufcany, is faid to be found there in beds and 

 ftrata, and to be dug out from the Cava di S. A. 

 Reate, between Monte Ruffoli and Canneto* 



b. Red fahguine jafper with white veins, from 

 Bnrga in the Apennines, is- found in large beds, 

 and compofing large rocky hills -f-. There are in 



3. Viaggi per la Tofcana. Ediz. :. Volumi fei, 8vo. 



4. Relazione d'alcuni viaggi fatti in diverfe parti della 

 Tofcana. Ed. 2. 8vo. Firenze, Vol. I, II, 1768. III. 1769. 

 IV. 17/0. A bankruptcy of the bookfeller ftopt the impreflion. 



. Halimurgia e delle piante che fervono di nudrimento in 

 tempo di caritia. 



6. Analifi e difefa della celebre opera intitdlata, Alimurgia 

 Yenezia, 1769. 

 , 7. Rsgionamenti full' agricoltura Tofcana. Lucca, 1759, 8vo. 



8. Iflruzzione circa le varie maniere d'accrefcere^l pane ccn 

 1'ufo d'alcune follanze vcgetabi-li. Pifa, 1767, 8vo. 



f The fame fpecies of red jafper is found in large beds 

 and rocks near Franckenberg in Hefien, whereof large raw 

 and polifhed fpecimens are to be feen in the Landgrave's 

 public colleaions at Caflel. The keeper of this cabinet, 

 xvhofe eminent tafte and knowledge appears in its fmgular dif- 

 tribution, calls it Franckenberg-agate ; but he is wrong in 

 t)ut, 



G 2 the 



