2 1 2 ADAMS. 



Ijrought to market. Latel}', with tlie building of tlie laili-oad. the town 

 lias begun to grow near the station and it is probable that in a short 

 time the towns of Taytay and Cainta, the latter but a short distance to 

 the west, will form a continuous settlement. From a hygienic stand- 

 point it would have been better if the inhabitants had built their homes 

 on the hill land, bnt the advantages of a healthful location have been 

 sacrificed for convenience in pursuing the agricultui'al aiid fishing in- 

 dustries. 



Geology. — Besides the alluvium which forms the cultivated lands, the 

 geologic formation at Taytay consists of a water-laid volcanic tufF, 

 which in places contains conglomerate beds. Tuff outcrops conspicuously 

 in the streets near the church and the municipal building, and along 

 the road towards Antipolo. It forms the peninsula-shaped elevated area 

 mentioned in describing the situation of the town. The bedding of the 

 tuff is quite even in some places, but in others shows a thickening and 

 tliinniug of the strata and some irregularities of dei)osition, especially 

 in the conglomerate portions. Eastward of the town on the I'oad to 

 Antipolo, there are heavy beds of this foi'mation which outcrop in a 

 flat-topped hill, producing escarpments. (Plate VIII, fig. 2.) There 

 is a slight dip of the beds to the westward, due in part to the inclination 

 of the sea bottom on which they M-ere deposited, but the amount of dip 

 can not be determined accurately from the exposures. 



The alluvium forms a veneer only a few feet thick over the tuff. A 

 well at the cockpit between the municipal building and the railway 

 station reaches the tuft' at a depth of about 5 meters. 



To the east of Taytay at the foot of the first range of hills, the forma- 

 tion comes in contact with igneous rocks. These geological relations are 

 shown diagrammatically in the accompanying figure. No. 1. 



Fig. 1. — General Geologic Relations at Taytay. 



Water supply. — Both the tuft' formation and the alluvium are abun- 

 dantly water bearing. To the east of the town, there is a small spring 

 which comes out of the tuff, but the place of issue is concealed by loose 

 material. (Plate IX, fig. 1.) The water from this spring is usually 

 made to run over a leaf from which it flows into a basin excavated in 

 the tuff. During the -dry season the stream of watef is about the size 

 of a lead pencil. This spring, although rather distant from the town, 

 is largely used by the inhabitants who consider it the best water they 

 can o])tain, but it supplies a very inadequate amount. 



