1869.] Notes on the Geology and Physical features Sfc. 151 



This species very much resembles P. Geramicus in the form of the 

 syncarpe and of the drupes. The syncarpe of P. Geramicus, however, 

 is drooping when ripe, and the stigmata are also differently formed. 



Sect. V. Souleyetia, Graudichaud. Drupae simplices ; stigmata 

 semilunata v. subhippocrepiformia, subsessilia ; ovula 3 placentae 

 basilari instructa. 



27. P. freycinetioides, (Souleyetia freycinetioid.es, Gaud., 

 loc. c, t. XXIX). 



Graudichaud includes Souleyetia in the Freyctnetieae, but I think 

 the respective species is more correctly referred to Pandanus. 



Notes on the Geology and Physical features of the Jaintia hills ; — 

 by Captain H. H. Godwin-Austen, F. K. G-. S., Topographical 

 Survey of India. 



[Received 16th December, 1868, read 3rd Feb. 1869.] 



The western boundary of the district of the Jaintia hills, is the 

 river Mangat, crossed on the direct road from Lailangkot to Jawai ; 

 the valley is deep and extremely picturesque ; the hills rising from 

 the narrow strip of rice land at the bottom in steep slopes of grass and 

 wooded ravines and close under the crest into precipitous scarps. 

 Among others the Nongjerong hill presents very conspicuous features. 

 The geological formation is here of metamorphic rocks, a well strati- 

 fied gneiss, and in the bed of the river the boulders are almost entirely 

 of that rock, mixed with quartzitic sandstone, and a few boulders are 

 of a dark green trap. 



Ascending from the river to the top of the slopes of the left 

 bank, and passing the village of Simunting on the right, a short 

 distance, the first patches of a stratified rock are seen, a coarse 

 gritty sandstone of light colour, forming the tops of the little 

 eminences and never exceeding here perhaps 20 feet in thickness. 

 They are lost sight of as soon as the descent into the Mantadu com- 

 mences, where the metamorphic rocks, dipping at high angle and with a 

 E. N. E. strike, are seen again : the sandstone series reappearing when 

 the opposite ascent is crowned. A strong interbedded conglomerate 

 is very noticeable here, always lying at the base of this formation. 



