158 
Proceedings of the Eoyal Society 
The special information they give is, — 
1. That all the latest geological changes have not materially 
affected the relations of hill and valley. 
2. That the valleys were largely excavated by ice. 
3. That the ice covered the land till it was submerged. 
4. That the depression of the land below the sea was con- 
tinuous, and ultimately attained 1000 feet at least. 
5. That the depression was, at one point at least, sudden. 
6. That this sudden fall did not begin later, at least, than the 
time at which the present 90 feet line above the sea -level reached 
the level of the sea. 
7. That this sudden subsidence could not have amounted to less 
than 200 feet. 
8. That it could not have much exceeded 300 feet. 
9. That under obvious limitations, the beds which lie nearest 
the sea-level and deepest helow the surface^ are the oldest, and that 
those are contemporary which occupy the same relative position to the 
sea-level and the underlying roch. 
2. On the Agrarian Law of Lycnrgus, and one of Mr Grote's 
Canons of Historical Criticism. By Professor Blackie. 
3. On the Occurrence of Amoehiform Protoplasm and the 
Emission of Pseudopodia in the Hydroida. By Professor 
Allman. 
The author described the contents of the small tubular appen- 
dages, named Hematophores by Busk, which are developed upon 
certain definite points of the hydrosome in the Plumularidce. 
These contents were shown to consist of a granular protoplasm, 
with occasionally a cluster of large thread-cells embedded in it. 
The protoplasm has the property of emitting pseudopodia, which 
are very extensile and mutable in shape, and exactly resemble the 
pseudopodial prolongations, whose occurrence among the Bhizopoda 
is so eminently characteristic of this group of Protozoa. The con- 
tents of the nematophores, indeed, except alone in the presence 
of thread-cells, are indistinguishable in structure, and in the phe- 
