Names of Vessels 
Barque Act@a (Capt. 
Walker) 
Ship Zdomene (Capt. 
4 Johnson) 
| Barque West Austra- 
lian (Capt. Thomas) 
Anerly (Capt. 
Strachan) 
; jue County of 
_ Flint (Capt. J. 
prewiend) 
PUMICE OR VOLCANIC DUST IN THE INDIAN OCEAN. 
[PLATES V. and VA. | 
among the Reports. | 
Month and 
Day 
1883 
May 20 
» 21 
» 21 
Aug. 11 
a be 
HS 18 
» 19 
» OT 
a. SSE 
i 28 
28 
773 
A Tabular Statement of the Dates at which, and the Localities where, 
Pumice or Volcanic Dust was seen in the Indian Ocean in 
1883-84. By CuaRLes Metprum, F.R.S. 
[A communication ordered by the General Committee to be printed in eatenso 
| 
| Hours 
2 p.m. 
noon 
Position 
at Noon 
Lat. 
Remarks 
8a.m.to| 6 238. 
8 35S. 
9 418. 
11 0858. 
88 31 
91 53 
90 28 
88 03 
North Watcher 
Auger Roads 
8 205. 
4 228. 
| Great quantity of dust 
Very fine dust com- 
menced to fall about 
2p.m. The fall con- 
tinued all night, and 
stopped about 9 a.m. 
on the 21st. Small 
quantities fell again 
during the night. 
Passed through large 
fields of pumice. 
Passed a great amount 
of floating lava or 
pumice. 
Passed a great amount 
of lava to-day. | 
Large quantities of | 
pumice ; some pieces 
about 3 feet in dia- | 
meter. 
Ashes began to fall at 
10.24 a.m. Showers 
of ashes and pumice 
lasted till midnight. 
Immense quantities of 
pumice and débris of 
all sorts. 
falling; supposed to 
be coral dust. 
L’atmosphére surchargé 
de sable. De minuit 
4 11 heures du matin 
une trés grande quan- 
tité de sable trés 
blanc et trés fin a 
couvert toutes les 
parties accessibles, 
méme presque dans 
la chambre. Je crois 
que c’est le résultat 
d'un orage que nous 
avions observé ces | 
jours derniers sur 
Sumatra, pendant 
lequel le tonnerre | 
avait des roulements 
