274 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
. Bottles 1—18. Tow-net was on bathroom tap. 
Rs 19. Tow-net was on tap in engine room on 
condenser. 
iP 20. One tow-net was on same condenser tap, 
other on pipe carrying away water after 
having been used to cool the shaft 
bearings. Catch of both tow-nets put 
together. 
,, 21—23. Tow-net on pipe as before (water for cool- 
ing shaft bearings). 
GOWHE, 
But little comment is necessary on the clear statement 
of each collector. Twice Capt. Wyse speaks of numerous 
streaks of yellow floating matter, like ground pumice 
stone (see reference to bottles 12 and 16, taken off Ceylon 
and in the Red Sea). I am unable to find anything in 
- either bottle to account for this, further than the presence 
of a few very small masses of fine, yellow vegetable fibre in 
bottle 12, probably a mere coincidence. It is quite 
possible, as Capt. Wyse seems to suggest, to have been 
actually due to particles of pumice stone from a volcano. 
I well remember seeing and collecting quantities of 
pumice about the Canary Islands in 1887, the high-water 
mark being strewed with them, and these were almost 
certainly due to the recent volcano outbreak of Krakatoa. 
The confervoid Alga, Trichodesmiwm erythreum, found 
in the Red Sea, has already been alluded to. 
Captain Wyse does not appear to have used the tow-net 
in the Indian Ocean during the homeward voyage from 
Calcutta until reaching the Red Sea. 
