of the Island of St. Paul. 363 
Results. 
The whole of the microscopic forms of the Island of St. Paul 
thus brought to light are— 
Organic silicious forms. 
35 Bacillarie (Polygastria). 
5 Polyeystina. 
67 Phytolitharia. 
2 Geolithes. 
Calcareous forms. 
14 Polythalamia. 
1 Bryozoon. 
1 Zoolitharion. 
Soft forms. 
3 Rotatoria. 
2 Tardigrada. 
1 Anguillula. 
13 Arcellina (Polygastria). 
1 Lepidopterous scale. 
7 Portions of plants. 
2 Oscillatoriz. 
154 
Inorganic forms. 
7 kinds. 
161 
To these may be added isolated mouse-hairs and dyed blue 
and red fibres of wool, originating from the clothes of men or 
from filter-paper. 
Of the whole 161 kinds, 76 are independent organisms; the 
other organic forms are characteristic parts of larger organisms, 
mostly grasses and sponges. 
Of inorganic characteristic forms 7 are registered. 
Besides these 154 organic and 7 inorganic forms, no traces of 
any others could be detected with a power of 300 diameters and 
even more. 
The whole of the structures registered belong to the six classes 
already indicated in the ‘ Mikrogeologie’ as widely distributed on 
the earth, and to their well-known families. But among them 
there are six forms which had to be described under new generic 
names, and which therefore may be particularly characteristic of 
this small island. These are the genera Collorhaphis, Collosigma, 
