CONTENTS. 



riiAP. 



57. Five remedies derived from lime .. 



.OS. Maltha .. 



/>'., Gypsum .. .. .. .. .. .. .. 



60. Pavements. Tlie Asarotos oecos .. .. .. .7 



61. The first pavements in use at Home 



62. Terrace-roof pavements .. 



63. Gnecanic pavements .. .. .. 



64. At what period mosaic pavements were first invented. At 



what jeiod arched roofs were first decorated with glass .. 



65. The origin of glass 



6';. The various kinds of glass, and the mode, of making it 



67. Obsian glass and Obsian stone .. .. .. . . *. 



6S. Marvellous fart* connected with fipe .. .. .. 



60. Three remedies derived from lire and from ashes 

 70. Prodigies connected with the hearth .. .. 



1JOOK XXXVII. 



THE NATUK.VL IIISTOKY OF I'KKCIOUS STONES. 



1. The first use of precious stones .. .. .. .. .. 380 



2. The jewel of Polyrratcs .. .. .. .. .. .. t'. 



3. The jewel of Pyrrhus .. 387 



4 Who were the most skilful lapidaries. The finest specimens 



of engraving on precious stones .. .. .. .. 380 



!>. The first daetyliotheew at Komi! .. 300 



(1. ,lfw-ls displayed at Kine in the triumph of Pompciim Magnus ib. 

 7. At wliat prriod luunuine vessels were tir>t. intiouuced at Home. 



Instances of luxury in nfT me to them .. ' .. .. 302 



ft. The nature of murrhine vessels .. .. .. .. .. 3!'*> 



i. Tlic nature of crvstal .. .. .. .. .. .. 301 



10. Luxury displayed in the nse of crystal. Remedies derived from 



crystal .... . . . .' HO ' 



11. Amh<T : the mnny falsehoods that have }<rn told ahout it .. 307 



12. The several kinds of amber: the remedies derived from it .. 402 



13. Lynenrium : two asserted remedies .. .. .. .. 401 



14. The various precious stones, clarified according to their prin- 



cipal colours .. .. .. .. .. ,. .. .005 



15>. Adamas : six varieties of it. Two remedies ., .. .. ib. 



1C). Smaragdus 4 OS 



17. Twelve varieties of the smaragdiis .. .. .. .. -110 



15. Defects in the smarngdiis .. .. .. .. .. 411 



19. The precious stone called tanos. Obalcosmaragdos .. .. 4l'{ 



20. Beryls: eight varieties of them. Defects in beryls .. .. 414 



21. Opals: seven varieties of them .. .. .. .. .. 41.J 



*J2. Defects in opals : the modes of testing them .. .. .. 416 



23. Sardonyx; the several varieties of it. Delects in the sardonyx 417 



