LOWER NEIGHBORS OF CART AGO 149 



etc. Senor Piatt found that the water as It Issued from 

 the calcareous rock had a constant temperature of 50 de- 

 grees Centigrade and contained in each ounce of water two 

 grains of solid material, consisting of chloride of sodium and 

 potassium; carbonate and sulphate of lime; carbonate of 

 iron; chloride, carbonate and sulphate of magnesia, arranged 

 In order from greatest to least in quantity. The gases 

 which are set free are principally carbonic acid. A more 

 elaborate result was obtained In 1887 by Dr. C. F. Chandler 

 (quoted In Blolley's Costa Rica and her Future, page 17), 

 the one and one-half grains of solid material from each ounce 

 of water being composed of sodium chloride, bicarbonate of 

 lime, sodium sulphate, bicarbonates of sodium and magne- 

 sium (in the order named from greater to less) with smaller 

 quantities of other salts. 



Behind the bath house the hills rose abruptly; about half 

 a mile downstream they lie so close to the river that there 

 was no room for a path or road, which was therefore carried 

 over the hill. The Agua Caliente River at the bridge Is 

 pretty, with little islands here, overarching trees festooned 

 with Tillandsia there, with stretches of smooth water al- 

 ternating with boulders and ripples. It was never very pro- 

 ductive of dragonflies, however, so that we spent little time 

 by its banks. By turning south into the hills we came upon 

 a charming grassy lane crossed by a rivulet trickling from a 

 swampy spot. Higher up, this path grew steep and in wet 

 weather slippery, through red soil with masses of disinte- 

 grating feldspar, and higher still entered low second-growth 

 woods, where the first Gomphlne of the expedition {Epigom- 

 phus subobtusus) was captured on May 20. 



The general group of hills lying south and east of the bath 

 house on the right bank of the Agua Caliente River was 

 called the Jocosal. There was quite a network of roads over 

 the Jocosal, most of them surprisingly good In spite of their 



