I, I B B R D V O D BC I M V S. 457 



pedes quac!raginta,alta trcs : tiim ucna: cx his cailcllis cuccflx conijciantur 

 in alia caiiella,^ aquis,dcnuo in co dcriuatis , atqj pucrorum impubiii uri^ 

 nisfuperfufis comoucanturperticis: quod dilutum turbinibus cxtra<fiis ea 

 dem lacuna cxcipiat:iiuc ucro hacc,fiuc lacus dilutum contincat paucis poft 

 dicbuscxanclatumcanahculisinfundaturin plumbcas cortinas quadran* 

 gulas,&r in cis coquatur,doncc multo maxima aqux partcm exhalarit, atcp 

 terra ab co fccrcta fucrit : quacin fimdo cuiufcp cortinx refidcns pinguis dl 

 Sc aIumino{a,ac ex minimis cruftis conftare folct; m quibus non raro candi 

 diflimus 5l leuilTimus amianti, ucl lapidis fpccularis puluis incfl.Tum dilti 

 tum farinx fimilc uidctur.Sunt qui modicc co<ftum cffundunt in cupam,ut 

 limpidum &purum fiat: deindcin cortinamrcfufum rccoquunt,ufc|j dii fa 

 rinx fimile euadat : utro modo fpiflatum flierit,m6x transfundatur in uafa 

 lignca,in tcrradefofla,utrcfi'igcfcat: deinderefrigcratum cffimdatur in cujs 

 pas,in quibus furculi re(fli&Ctranfuerfari) funtinclufi,ad quos adhccrcfccns 

 denfatur in alumcn:fiunt'q5 cubi parui, Sc candidi,&^ translucidi : qui in hy^ 

 pocaullis rcpofiti ficcentun Si uena: aluminofx atramcnti futoni part icipf, 

 cum aquis dilucretur,urina; fupcrfufac non fi.ierint, cas in dilutum limpidii, 

 Sc purum,cum recoquitur,infundcre necefle efl.Ipfac enim atramentum fu* 

 torium ab alumine fcparat : quo modo illud in fundo cortina; fubfidct,hoc 

 fupernatafutrunc^ feorfum efFundere conuenit,in uafa minora,&r ex his in 

 cupas,utfpifretur.Siuero,dumdilutumrecoquitur,feparatanon fiierint, 

 mox ex minoribus uafis infundatur in maiora,ea'cp cocludantur : in quibus 

 itcm atramcntum futorium feparatum ab alumine concrefcit:utruncp cxci* 

 riin%8c in hypocaufto ficcatum diuendatur dilutum, quod in uafis S^ cupis 

 non concrcuit, in cortinam refufum recoquatunfed terra,quac in fundo cu^ 

 iulv^ cortina; rcfedit , ablata in caflello una cum uenis, denuo aqua 8c urina 

 diluatur. At tcrra, qurc in caftellis diluto , poftquam effluxit,fupcrfuit egc;* 

 (la 8c coaceruata quotidie, rurfus magis ac magis fit aluminofa , non ahrcr 

 atcp terra,cx qua halinf trum fuit confecT:um,fuo fucco plenior fi!t:quare dc^ 

 nuo in caftella conrjcitur,&:: aqux afilifac ea percolantur, 



Cd/icIIi A, Fertica B, Turho €♦ LacKi D. Lacun/t 

 E. CanaliculusT, Cortina ^lumhea G, VafaUgneain 

 terradefoffa h, Cuj^ainftafurculiinclufifunt i, 



CL Atfaxa 



