292 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1913. 



over in part or altogether to SO3 and gone into solution, and only 

 two of the five tubes analyzed now show SO, as such. Moreover, the 

 resulting acid solution may have reacted to a limited extent on the 

 glass tube, and accordingly be responsible for all or a part of the 

 alkalies, lime, and alumina shown in analyses of the water (table 3). 



PRELIMINARY ANALYSIS OF ONE TUBE OF GAS IN HONOLULU. 



For this reason some importance attaches to a preliminary and very 

 hasty analysis of the contents of one of the tubes (No. 3) made but 

 four days after the collection, for which the College of Hawaii most 

 courteously extended the facilities of its chemical laboratory at Hono- 

 lulu. This preliminary analysis was undertaken solely as a precau- 

 tion against the consequences of a possible total loss of the material 

 collected through accidents of transportation. 



Owing to the limited facilities, it was not possible to make a com- 

 plete analysis; but in tube No. 3 shaking with water reduced the total 

 volume of gas by 51.6 per cent, which may fairly be assumed to repre- 

 sent the SOo in this particular tube. As there was a quantity of the 

 condensed volcano water in the tube already, this merely reveals the 

 quantity of SOo in excess of the quantity already taken up by this 

 water. The carbon dioxide of this tube amounted to 39.8 per cent, 

 but was probably contaminated with some SO^. The CO amounted 

 to 5.5 per cent. The hydrogen and nitrogen could not be determined, 

 but there was not enough hydrogen in the residual gas to form an 

 explosixe mixture when mixed 1 : 1 with air. The water in this tube 

 gave a very slight turbidity with acid silver nitrate and a slight pre- 

 cipitate of SO3. This latter represents the amount formed in the 

 tube in the time which elapsed between the collection and analysis 

 (four days). This tube gave no test for titanium. 



Hydrocarbons could not be detected in any of the tubes. 



THE MATERIAL PRESENT IN THE WATER. 



The water which was collected in the first tubes of tlie series may 

 fairly be assumed to contain practicall}'^ all of the halogens. The 

 analysis of this water is given in Table 3. 



Table 3. — Analyses of material contained in the water collected in the tubes. 



NajO 



KjO 



CaO 



FesO, \ 



Ai,o,; 



CI..... 



F 



NH, 



TiOj 



Total S as SO3 



Tube 1. 



Tube 2. 



Remarks. 



The major portion of these 



i tnay have come from the 



glass or from Pele's hair. 



