524 PROFESSOR HEDDLE ON THE MINERALOGY OF SCOTLAND. 
The former found unions (verwacksungen) of augite and hornblende crystals, 
each with its own cleavage. LAIDENGER’S observation was one still closer, if 
not identical in character with the present; the grass-green smaragdite from 
the Bacher was found to consist of augite and hornblende in alternate layers; 
one of the cleavages of the hornblende being parallel to the face a of the augite ; 
and the intersection of the cleavages parallel to the edge a 6, which is precisely 
what obtains here. 
HORNBLENDE. 







Amianthus— [ 
Balta, ; 2°95 || 56°15 | 1°54 39 | 3°11) ‘77 | 11°72.) 22°46 19 *69))|'| eas eas 99°52 
Asbestus— 
Shinness, , - io 56°85 23 48 | Deo) “28 daha 23e92 “44 54 | tr. 2°53 || 99°87 
Portsoy, . 5 2°99 || 56°31 tii 53 | 2:°32| “16 | 12-58 | 23°31 “44 63'| tr 2°94 || 99°98 
Nephrite— ; 
Balta, ‘ 5 2°96 |] 55°73 [05a meee 52 ‘01 =| 13°24 | 22°7 14 | U1 25) ees --- || 100°62 
Schistose— ° 
Leegarth Fetlar, 2°95 || 56°92 SOD cue 4°65! °08 | 12°32] 22°08] tr. tr. aon 3°4 || 99°66 
Tremolite— | 
Shinness, . 2°96 || 56°15 *86| 1°62 2:07 | TSe31 iaaeria “44 PAST ane 2°5 || 100°01 
Glen Urquhart, . Ses 5iF3L || 6:68) | W08 |) S28.) “Sl A2tSGuG 62) 4-6 aa tr. 2°5 || 100°08 
Actynolite— 
Hillswick, . 4 2°99 || 55° 151 99 | 3°46} °81 | 10°38 | 23°31) L12 |} 11 wae 2°9 || 100°07 
Edenite-—— é 
Urquhart, green, . Sas 50°31} 8°54 “12 2576.) 08 f 0l6ai 20577 5 1°16 | none. | 4°13 || 99°99 
A black, . et 51°31} 2°21 16 | 7°66| ‘49 | 11°17 | 20°87] 2:2 "AG |S 2°12 || 99°65 
Pargasite— 
Errins, : . fas 52°69 | 2°56) 4:09 | 9°77) °23 | 11°42 | 15°77 “57 “69h an 2°13 |} 99°91 
Hornblende— 
Balta, “ ; Sa 4587 | Sse) se | le ton) els 9°82 | 14°4 "82 | 1°43 a 2°3 97°7 
Fetlar, . 2 3°09 || 41°63 | 11°63] 1°85 | 8:°95| ‘81 9°25 | 18°51 63 | 1°22 we nok 99°37 
Portsoy, . 3 O20 92°00) 2c On | wee 9°72 tr. |'19°05 14-41 || -75 "Od || eee 85 || 99°99 
Glenbucket, t 3°22) || 45° 9°41 | 1°55 | 16°76] °33 | 11°24/11°19} 1°36 | 1°66 on) 1°34 99°85 
Durness, . 5 sae 51°46} 2°97) 2°45 | 9°66|1°08 | 20°07 | 10°46 68 | 1°31 oe 68 || 100°83 
Elie, . 5 . 3°37 || 40°38 | 19°01] 2°12 | 7:28) -46 | 11°54]17°5 ome a se 117 || 99°48 



Alteration Products of Hornblende. 
Incipient Incrementation of Water; Peroxidation of the Iron; Decrement 
of Lime. 
18. The serpentinous change of augite on the Green Hill of Strathdon has 
already been noticed. A little further up the slope of the north side of the hill 

