Volcanic Disturbances in West Indies 291 



CHEMICAL ANALYSES 





1. 



2. 



3- 



4- 



5- 



6. 



7- 



S. 



SiO., 



61.07 



17-55 

 2.13 



4i3 

 2.26 

 628 



3-5° 

 .98 



-23 

 1-37 



• 47 

 F't tr. ? 

 None. 



•15 

 None. 



60.01 



17-54 

 2.88 



4-3° 

 2.76 

 6.80 



3-4i 

 .89 

 .10 

 ■30 



•45 



? 



None. 



•15 

 None. 



63-23 

 1673 

 2.58 

 3.12 

 1.84 

 6.01 



3-71 

 1. 11 



•17 

 .48 

 .40 



? 



None. 



-15 

 None. 



55-64 

 18.21 



3-63 

 4-83 

 3-48 

 8.14 



3-55 

 -58' 

 .20 



•54 

 .98 



52.S1 



18.79 

 3.28 

 4-58 

 5-J9 

 9-58 



3-23 

 .60 

 .20 

 • 17 

 ■95 



57.62 

 19.76 



3 43 



3-90 



1.S2 



6.25 



3-79 



• 7i 



■ 4i 



•59 



.87 





58.41 



17-85 



2. 67 



3-29 

 3-6l 

 6.81 



A1,0, 



Fe.,6, 



>- None. -J 



FeO 



MgO 



CaO 



.20 

 .oS 



Na,0 



3-77 



i- 2 3 



•34 



.86 



K 2 



H.,0 — 





ILO + 





TiO 





.69 



ZrO., 





CO., 



None. 



.11 



None. 



• 15 

 •33 



• 14 



.07 

 .28 



None. 



•17 

 None. 



.11 







PA 



S0 3 



CI 





.24 



.29 

 Strong tr. 



s* 



.016 



None. 



.21 



.02 



None. 



F't tr. 



Tr. 



None. 



•23 



■°3 



None 



F't tr. 



Tr. ? 

 None. 

 .18 



•03 

 None. 

 ? 



.04 



None 



•'9 



•03 





NiO 







Mno. . . 



.08 







BaO.. 







SrO 











Li 2 

























100 366 



99-85 



99 74 



100.15 



100.35 



100.0S 





. * Where sulphur is reported in the above analyses the values given for FeO and Feo03 are in error by inde- 

 terminable amounts, which vary with the proportion of sulphur. 



Martinique 



1. Pumice from Mont Pelee, eruption of May 8. No soluble chlorides or sulphates. Analyst, 

 W. F. Hillebrand. 



2. Sand, deck of Roddam, eruption of May S. Analyst, W. F. Hillebrand. 



3. Sand, deck of Potomac, eruption of May 20. Analyst, W. F. Hillebrand. 



St Vincent 



4. Pumice from La Soufriere, eruption of May 7. Analyst, George Steiger. 



5. Sand, Barbados. Analyst, Dr. Pollard. 



6 Dust, steamship Coya. Insoluble in H 2 0. Analyst, George Steiger. 



7. Dust, steamship Coya. Soluble in H.,0. Analyst, George Steiger. 



Crater Lake, Oregon 



8. Hypersthene augite andesite. Analyst, H. N. Stokes. 



Specimens were obtained from Bar- 

 bados and a vessel far to the southeast- 

 ward, but the character of the material, 

 as well as its movement, noted by ob- 

 servers, indicate that it came mainly, if 

 not wholly, from St Vincent, and will 

 be described later. 



" Fumarole Deposits," Moyit Pelee. — 

 The collection includes six samples of 

 material (Nos. 25 to 30, inclusive), 

 marked "Fumarole deposits." They 

 are all essentially the same and may 

 be treated together. In color they 

 range from dirty white to buff and red- 



