Firth. 



of Mount Eden. 461 



Seventh and latest eruption. 



Brown soil and scoria stones intermixed 



• •♦ ••• • « * 



stones 



• • • • # t 



Loose red scoria ash with round nodules of very dense scoria covered 

 with cement deposits ; steel grey fracture, showing abundance of 



Fourth eruption. 



Hard bluish rock 



• • # • » » 



Hard close-grained rock — Indian red colour 



• • « 



?> >> 5? 



Second eruption. 



a. Baked clay with round holes in which fern roots had been im- 



bedded 

 Fine scoria gravel 



••• •«• ••• • f ft 4 * » 



• • • • • - • • • * I ft 



• • ft 



• • « ft ft) 



Ft. in. 

 12 



Blue scoria rock with patches of quartz, 18 feet ... 6 



Sixth eruption. 

 Loose scoria stones with crevices from which issued blasts of cold air ; 



12 



olivine and brilliant coloured crystals ... ... ... 8 



Hard blue rock with patches of quartz ... ... ... 40 



Solid blue rock, close-grained, basaltic. 50 feet ... 8 



Fifth eruption. 



Loose boulders in coarse red scoria ash, pieces of quartz imbedded; 



full of crevices, through some of which came strong currents of 



pure cold air. Stones and ash filled with moisture ... 42 



Hard blue rock. 101 feet ... 9 



Red and sulphur yellow ashes and very porous rock ... ... 4 



Very close-grained hard blue rock ... ... ... 120 



Stratified basaltic rock, dipping from S. to N. at an angle of 30° ... 6 



Solid blue rock with quartz. 132 feet ... 9 



Third eruption. 



Bed scoria ashes and rough clinker cinders ... ... 36 



4 

 2 



Blue colour. 176 feet ... 2 



1 

 6 



2 



Red hard scoria, much honeycombed 



Hard close-grained blue rock. 180 feet 6 inches ... 1 



First eruption. 



b. Volcanic mud, full of holes (the impress of timber decayed) ... 2 



c. Soft sandstone rock of light yellow colour, stratified ... . . . 16 



d. Ochre, like Venetian red of a bright vermilion colour ... 1 6 

 Black scoria rock, intensely hard, full of air-bubbles or honeycombed. 



For 2 feet intersected by seams or joints transverse and vertical. 

 These seams were filled with the vermilion-coloured earth. This 

 rock presented every appearance of having been deposited under 



