604 



Proceedings of the Royal Irish Academy. 



Table E. — Analyses showing chief Inorganic Impurities of the Ovoca 

 River Basin. Eesults stated in parts per 100,000. 



Atokmore. 



No. 



"UTiere 

 obtained. 



! 1 



1 Present, but 

 Chief impurities j not quan- . Traces 

 determined. ! titatively ■ detected. 

 1 estimated. 



' 1 



Remarks. 



I. 



II. 



III. 



IT. 



Glendassan, 

 Clara Eridge, 



Eatbdrum 

 Mill, 



Meeting of 

 tbe Waters, 



Lead, . . 0-08 

 Total solids, . 7-5 



Lead, . . 0-04 

 Total solids,. 4-1 

 Inorganic solids, 3-1 

 Cblorine, . . 1-4 



Lead, . . 0-035 

 Solids, . . 3-9 

 Cbloi-ine, . 1-6 



Lead, . . 0-02 











Fe, As 

 H2SO4 



As 

 H2S0i 



1' Tmbid, and with 

 s mucb suspended 

 ' matter, neutral. 



f Clear, but 

 I sligbtly peaty. 



> Sligbtly peaty. 



Clear-, and sligbtly 

 peaty. 



SjIALL TEIBrTAEIES OF THE OvOCA. 



! 



T. 



TI. 



VII. 



VIII. 

 IX. 



Tigi'oney 

 (launders), 



Eallygaban 

 (Laimders), 



"EedEoad" 

 Stream, 



Tinnabincb 

 Sti-eam, 



Sulphur 

 Erook, 



Iron, . . 163-0 

 Alumina, . 197-5 



Iron, . . . 199-0 

 Alumina, . 214-0 

 Copper, . . 7'5 

 Manganese, 3-9 

 Zinc, ... 2-4 



FeiTic Oxide, ) g.g 

 Alumina, j 

 Co^jper, . .0-05 



Iron, _. . . ) ^.g 

 Alumina, . j 

 Coppir, . . 0-02 

 Solids, . . 22-5 



SoHds, . . 12-8 



Cu, Mn 

 MgjHoSOi 



Mg 

 H2S0i 



Mg 

 H2SO2 



Mg 

 H2SO4 



Mg 



As, Pb 

 Zn 



Pb 

 As 

 Co 

 Ca 



Zn 

 Ca 



FeoOs, Zn 

 AI2O3 

 H2SO4 



I Brown, vrith. 

 1 ocbi-e in suspen- 

 ( sion, acid. 



I Brown, with 

 > ocbi-e in suspen- 

 1 sion, acid. 



/ Coloiuiess, with 

 1 ocbre in suspen- 

 j sion, slightly 

 \ acid. 



("Colourless, 



•< brown sediment, 



(slightly acid. 



(ColomlesSjwith 

 -t brown precipi- 

 (tate, faintly acid. 



