1867.] SIACZr BE2S-&HAZT, BAEBART. 885 



The follo"^viiig is a brief description of a few of the lakes which I 

 have examined. 



••' Howa Bugedah"'* is about one-third of a mile in circumference, 

 "W.S.'^. slope to water; rocks perpendicular E.S.E. to S.W. Great- 

 est height of sides about 30 feet. Depth of water round the edges 

 11 feet X., 10 feet S., 15 feetE., from 13 to 14 feet ^. ; smaU cave 

 on the south-east side. 



'' Howa Mumlood/"' 150 yards to the eastward of the above, is 

 about half a mile in circumference ; X.E. slope to water,- sides per- 

 pendicular 2s. E. to S.E., about 30 feet high: depth of water 6 feet 

 K"., 9 feet "W. On the south-east the rocks are much rent and slipped 

 towards the water, leaving smaU chasms. 



''Howa !Mjngernat," about 200 yards further east, is about one 

 mile in circumference. The sides have more of a slope inwards, and 

 are much more weathered than the others. On the south-east side 

 is a small bay, the water of which is milk-coloured, being probably 

 shallow and charged with carbonate of lime. The rocks slope 

 downwards on the X.X.E. side, where it joins by a shallow channel 

 another lake, beariag the same name. Sides pei-pendicular, cracked, 

 and fallen in on the E. and !N'.E. About a quarter of a mile in cir- 

 cumference. 



" Howa Buhowsh," about 300 yards north-west of the latter, has 

 an island in the middle, separated from the north-west side by only 

 shallow water. On the south-east side the rocks are much split 

 and detached. Small caves in the fissures. 



In ''Howa lEumlood" on the X.X.TT. side, a thin layer of coarse 

 sandstone contains angular pieces of a black foreign rock, small 

 pieces of bone, and a flint with a polished under surface, appear- 

 ing as if it had been ground to a point. These materials were appa- 

 rently washed in through a fissure, as the layer is not continuous. 



Besides the above, many smaller subsidences have occuiTed ; in 

 fact, the face of the countiy may be said to be dotted with them. 



The causes of these subsidences may probably be explained by 

 examining a series of caverns containing fresh water and called 

 •'•' the Lethe," of which the accompanying section may give a suffi- 

 ciently correct idea. 



Section of " the Lethe " Caverns. 



The slope in this case leads by a low entrance into a cavern, which 

 leads by a narrow passage into another, where a huge block projects 

 from the water. This leads again into another cave by a low en- 

 trance, and this may lead to others ; but the rocks were so near 

 the water that I was unable to proceed further with the boat. Sta- 

 lactites hang fi'om the roof. 



The caves are probably reservoirs of the rain-water which runs 



