162 
Breccia with camptonite matrix. Rockland avenue, Outre- PAGE. 
mont, Montreal?............0.2.0..2.00= eee 
Dykes cutting the Trenton limestone. Westmount Reservoir 
quarry, Montreal... ......... 0. o.4 4. .@s se 
Microphotograph of alnoite. Point St. Charles, Montreal. 
The lath-shaped crystals are melilite showing peg structure. 
Contact of nepheline syenite (on left) with Trenton limestone 
(on right). The limestone is highly altered. Both rocks 
are cut by numerous dykes. Corporation quarry, Outre- 
mont, Montreal... 6.0 cae). 5a ee 
Tinguaite sheet, with Trenton limestone above and below, 
forming the floor of the quarry. Quarry at the head of 
Delorimier avenue, Montreal.........-....G... 9) ==ee 
Mount Johnson as seen from the southwest, showing the limits 
of the several rock types composing the mountain. 
Andose in quarry on Mount Johnson, showing vertical flow 
SEGUICOUGE ie. so See ow ss ichigo Bliewetvs, vo ce we se meiesyrel aCe name ene ae 
Quarry in andose, Mount Johnson, showing vertical flow 
structure-(on tight) s.c...4:5. c. Hosea!) see 
Cote St. Pierre. Eozoon locality to left of picture. --23e 
Columnar graphite and altered Grenville limestone, Walker 
mine: (Nelly’s pits). cc. 24. ot anc ke Aes Se ee 
Mica (phlogopite) with pyroxene (P), apatite (A) and calcite. 
Vein matter, Nellis mine 
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