33S MANILLA. 



improbable, if we are to credit the accounts we received of the many 

 craters on this island that are now filled with water ; for instance, 

 in the neighbourhood of San Pablo there are said to be eight or 

 nine. 



The hot springs of Bafios are numerous, and in their vicinity large 

 quantities of steam are seen to issue from the shore of the lake. 

 There are about a dozen which give out a copious supply of water. 

 The principal one has been enclosed, and made to flow through a 

 stone aqueduct, which discharges a considerable stream. The tem- 

 perature of the water as it leaves the aqueduct is 178°. The villagers 

 use it for cooking and washing : the signs of the former employ- 

 ment are evident enough from the quantities of feathers from the 

 poultry that have been scalded and plucked preparatory to cook- 

 ing. The baths are formed by a small circular building six feet in 

 diameter, erected over the point of discharge for the purpose of 

 securing a steam-bath : the temperature of these is 160° and 140°. 

 A change of temperature was said to have occurred in the latter. 



The rocks in the vicinity are all tufa, and some of the springs 

 break out close to the cold water of the lake. Near the aqueduct, a 

 stone wall surrounds one of the principal outlets. Two-thirds of the 

 area thus enclosed is occupied by a pond of warm water, and the 

 other third is divided into two stone reservoirs, built for baths. These 

 baths had at one time a high reputation, and were a very fashionable 

 resort for the society of Manilla ; but their celebrity gradually dimi- 

 nished, and the whole premises have gone out of repair, and are fast 

 falling to ruin. 



The water of the springs has no perceptible taste, and only a very 

 faint smell of sulphur is perceived. No gas escapes from it, but a 

 white incrustation covers the stones over which the water flows. 



Some of these waters were obtained, and since our return were put 

 into the hands of Dr. C. T. Jackson, of Boston, who gives the following 

 analysis : 



Specific gravity, 1-0043; thermometer 60° ; barometer 30-05 in. 



A quantity of the water, equal in bulk to three thousand grains of 

 distilled water, on evaporation gave — 



Dry salts, 5-95 grains. 



A quantity of the water, equal in bulk to one thousand grains of 

 distilled water, was operated on for each of the following ingredients : 



