On the chemistry of the ancient Assyrians / [R.C. Thompson].

  • Reginald Campbell Thompson
Date:
1925
Catalogue details

Licence: In copyright

Credit: On the chemistry of the ancient Assyrians / [R.C. Thompson]. Source: Wellcome Collection.

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    presents the Assyrian way of saying ”0 a r d UD- 'mineral” (if I an right in Section 3A,;\),and that IM.UD — pas s u pessojp]aster”,we shall probably not b© far wrong in see¬ ing in n a m r u t u some whitish mineral , softer than v (tak)uu, :,,j (limestone of some kind, Section 3<*), or in oth¬ er words, 1 i n o or c b a 1 k . The latter appears to b© the more probable * it is the natural mineral, and also according to Franchet(°A ), c h a 1 k was the usual form in which the element of lime was introduced into anc- ent piass. Section 11. The Details of Glass- M a n u f \ c t u r e . The following details in the making of glass, as riven in Poseoe(ii,K,ff.) should bo compared with those in the \s- syri an translationsi The materials ...are first fritted to ether in melting pots. ....The materials required for the formation of the glass are,if possible^always mixed with broken glass of the same kind,technically termed 1cullett1,for the purpose of increasing the fusibility of the mass. .. The furnace is kept very hot until the first portion of the material added ^as been fused, and then a second portion is introduced • .. .Formerly, when impure materials were more generally em¬ ployed... large quetntitles of..scum were formed » a layer of salts termed g1 or s-andiver, which had. escaped vi¬ trification! . Mow,however, its formation is avoided by the use of purer materials,and by the addition of charcoal
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