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Greenstone, Transition, of Fassney, Dr Ogilby on i. 126 



Veins of, in East Lothian described, - 474 



^ of Papa Stour, - l67 



the Ochils, \ * ii. l6 



Pentlands, - 185 



— Floetz series, - 194 



. ^- Middle District of Scotland, 631 



Grey-Wacke of the Pentlands, - 184 



» Conglomerate, - 207 



Grierson, Dr, his Mineralogical observations in Galloway, 373 



H 



Hawks, description of different species of - 587 



Heavy- Spar, Veins of, in East Lothian, - i. 476 



. the Ochils, - ii. 22 



Hills, Grampian, remarks on the Conglomerate Rock of, 



by Colonel Imrie, - i. 4>5S 



Campsie, Geological Account of, by the same, ii. 24 



Ochil, outlines of the Mineralogy of, by Charles 



Mackenzie, - 1 

 — Pentland, outline of the Mineralogy of the, by 



Professor Jameson, - ii. 17^» 

 Hippobosca, Generic Characters of, ii. 550. — Descrip- 

 tions and Synonyms of the Species, 553. 



Hirudo verrucosa, description of - 245 



Hisinger, W. of Stockholm, his Analysis of Pearl-Spar, 174 



History of the Society, - 63S 

 Hydrogen and Carbon, Dr Thomson on the Gaseous 

 Combinations of, i. 504.— Carburated Hydrogen Gas, 



506. — Its Properties, 507. — Method of taking the 

 Specific Gravity of Gases, 508. — General result of 

 Experiments on the Combustion of Carburated Hy- 

 drogen Gas with Oxygen, by Electricity, 510. — 



