Drxon & Joty—On Some Minute Organisms. 747 
the Diatoms, differing, however, from them in the fact of its 
giving rise to a number of individuals. 
In order to ascertain if coccoliths are widely distributed around 
our coasts, we examined specimens of the solid matter found in 
the sea-water, with a positive result, off the following places :— 
Sligo, Slyne Head, Tralee, Smerwick Harbour, Dingle Bay, 
Valencia, Waterville, Kenmare River, Dublin, and Weymouth. 
We did not find any in water gathered in Loch Inver nor 
Port Stuart.' 
Again, the coccoliths are present at different seasons of the year. 
This fact we have ascertained in part by fresh specimens, and 
in part by specimens which have settled down with other solid 
matter off algee, gathered in different localities and preserved in 
Spirit :— 
Spring, 1894, . Smerwick Harbour, Dingle Bay. (Spirit 
specimens.) 
Summer, 1896, . Kenmare River. (Spirit specimens.) 
Summer, 1897, . Dublin Bay, Killiney Bay, Valencia, 
Sligo. (Spirit and Fresh.) 
Winter, ’97-’98,. Killiney Bay, Waterville, Dingle Bay, 
Kenmare River, Slyne Head, Wey- 
mouth. (resh.) 
A coccosphere was found in water taken at Weymouth in the 
winter. 
The coccoliths obtained in Killiney Bay in winter seemed 
to be more battered than those caught at the same locality in 
summer. 
Coccoliths have been frequently described as occurring in 
various geological deposits. We have found them in chalk from 
Newhaven, and also in commercial whiting. The latter is almost 
exclusively formed of these peculiar bodies. In both these, how- 
ever, other organisms are to be seen resembling coccoliths in their 
1 Since the above was written we have found several coccoliths on the tests of 
Difflugia, but none free, in samples of sea- water from Portrush. 
2 Cretaceous, upper greensand immediately above the Gault; coccoliths and rhab- 
doliths were found in the Hearthstone, Bletchworth, Surrey. W.M. Holmes: Proc. 
and Trans. Croydon. Micr. and Nat. Hist. Club, 1892-93, pp. 17-20. 
Coccoliths are also said to be found in Palzozoic rocks. Nicholson and Lydekker, 
Paleontology, vol. ii. 
