The Heads of this TtcatifeJ 
ad. The Mmner of-the forming of 
per-Orfe. ' p. 69. 
27. The Manner of the forining of Silver- 
O -3. _ p.dp. 
a 8'.- of the flace and manner of, the fro^ 
'di:TH 9 nof\i)i 2 imor\Ai.y ’^ ;p.d^,7b. 
ap. 'H the formation of Marcattces p.70. 
How theirfroduBion differs fiom that of 
Chryji-als, ' p, 71 j 72.75. 
30. of the frodu^ion of Selcnitefs, and 
Taik^ and that Talk is diffolvahle into 
a Fluid Bod%though not by Fire^ p*74* 
31. Cockle-fhels largely difeours'dof^ 
both thofe that are taken out of the Sea^ 
and thofe that are digg'd out of Moufi^ 
tam^ \ ^ p.S$. 
where occurs fomething that may afford 
go,T‘tghtfor Oideology ff P> 77 - 
33. 'leilaeebus Animals bred of Bggs^ 
'not fiitrii'inxtter^ p* 7^» 
31 0 of Pear Is ,4;?^ the rnanher of their fro- 
duUion^ both round and others, - p. 79. 
And what foffibility there is of making 
yellow Pearls white, and of imitating 
Pearls^ p. 80. 
34* of Shells under ground k reduced td 
three forts^ P*f^« 
V 35. 
