CONTENTS. 



7. Opth 



Partial Sight of Objects, Dr. Vater 



A Boy restored to Sight, Wm. Chesselden . . 



On Optical Experiments, Desaguliers 



Instrument for taking Altitudes, Hadley . . . 



Page Page 



4.4 New Quadrant for Altitudes, J. Elton 531 



235 Observ. with a New Sector, Hadley 557 



292 Godfrey's Improv of Quadrant, Logan .... 66Q 



486 New lustrum, for the Lat. Rd. Graham . . 673 



8. Magnetism, 



Magnetic Variations, George Graham .... 27 



On the Dipping Needle, ditto 94 



On Magnetic Powers, Muschenbroeck .... 105 



A Person killed by Lightning, Dr. Beard . . 153 



Magnetic Variations, Dr. Halley 224 



Treatise on Loadstones, Ld. Paisley 383 



Magnetic Experiments, S. Savery 400 



Electrical Experiments, Ste. Gray 449 



Unusual Case of Magnet. Needle, Hoxton 463 



and Electricity. 



Magnetic Variations, Middleton 465 



Electrical Experiments, Ste. Gray 536 



Artificial Magnetism, Marcel 540 



Magnetic Vari.itions, Dr. Halley 552 



Electrical Experiments, Ste. Gray 566 



Magnetic Variations, Jos. Harris 604 



, Capt. Middleton 6l7 



Electrical Experiments, M. Du Fay 638 



Magnetic Sand, Dr. Muscheribroeck 647 



Class III. Natural History. 



1. Zoology. 



On the Mus Alpinus, Scheuchzer 181 



Hirundinella Marina, M. Garcin 424 



Catesby's Nat. Hist, of Carolina, Mortimer 432 



On the same. Dr. Mortimer 500 



The Coccus Polonicus, Dr. Breyne 511 



The Coccus Radicum, by ditto 575 



On the same, by ditto 577 



The Elying Squirrel, M. Klein 588 



Remarkable Insects, Rd. Lewis 6l4 



Locusts and Caterpillars, J. F. Weidler. . . . 645 



Catesby's Nat. Hist. Mortimer 655 



The Rattle-snake, Sir Hans Sloaue ibid 



1. Bota 



Catalogue of 50 Plants, Isaac Rand 27 



New England Plants, P. Dudley 57 



Catalogue of 50 Plants, Is. Rand 85 



The Vegetable Lamb, Dr. Breyne 103 



The same, by ditto 155 



Propagation of Misleto, Edm. Barrel 176 



Catalogue of 50 Plants, Is. Rand 191 



The Culture of Saffron, Dr. Douglas 278 



The same, by ditto 321 



On Martyn's Hist, of Plants, ditto ibid 



Cinnamon of Ceylon, Alb. Saba 340 



Catalogue of 50 Plants, Is. Rand 377 



ny. 



New Plants Oxyoides, M. Garcin 421 



Remarks on the same, J. Martyn 422 



On the Plants Musa, M. Garcin ibid 



The Cereus Peruvianus, Dr. Trew 441 



Catalogue of 50 Plants, Is. Rand 442 



Contrayerva Root, Dr. Houston 506 



Swiss Plants, Dr. J. J. Scheuchzer 512 



Catalogue of 50 Plants. Is. Rand 513 



The same, by ditto 577 



On Breyne's Polythalamiums, Massey .... 629 



Catalogue of 50 Plants, Is. Rand 631 



The Mangostans, Dr. Garcin ibid 



3. Miner alosh 



A Body preserved in a Mine, I-eyal 41 



On Crystals, &c. Dr. Scheuchzer 85 



Petrified Skeletons, ditto 1 29 



Strata and Horns in Ireland, Kelly 154 



A Leaf in Amber, Dr. Breyne 160 



On Cobalt, J. H. Lincke 171 



On Rare Crystals, Dr. Scheuchzer 187 



Nat. Hist, of Minerals, Dr. NichoUs 224 



Pamice Stones on the Sea, J. Dove 234 



Nat. Hist, of Minerals, Dr. Nicholls 248 



Brazil Diamonds, De Castro Sarment 508 



On Quicksilver, Dr. Boerhaave 6 10 



