206 GLACIAL BOULDERS OF OUR FISHERIES.—HONEYMAN. 
2,3, 4,5, 6. Lower Cambrian Quartzites. 
7. Caleareo-Quartzite, corresponding with rocks of Eastern 
Passage. (Vide Geology of Halifax, &c., Trans. I N.S.) 
8.9. &., Argillites. 
10. Diorite, like that of Sunday Point, Yarmouth. (Vide 
Geology of Digby and Yarmouth, Trans. I. N. 8.) 
11 to 22. Lower Carboniferous Limestones, like those of 
Hants County. Boulders of these abound in the glacial moraine 
deposits at Laurencetown Head and entrance to Eastern Passage. 
(Vide Papers on Surface Geology, Trans. I. N. 8.) 
Our 11 boulders are all perforated marvellously by Saxicava 
artica (rugosa), a characteristic mollusc of the Champlain 
Period, which still abounds in our harbour and on the fishing 
banks. 
In a paper read before the Institute—* Additional Notes on 
Glacial Action at Bedford Basin, Halifax Harbour, &e.,’—Trans. 
Vol. VL, pp. 251-260,—is a list of Mollusca from Jones’ cata- 
logue of 1887. In the list of.42, we have 12 Arctic and 30 
Boreal. We will find many of these mollusca attached to our 
boulders. The other associated invertebrata have also a Boreal 
facies, ¢. g., the “ Spongide.” Hence the illustrated memoirs of 
the Norwegian North Atlantic Expedition in our Institute 
Library has been largely available in our recent investigations. 
Classification of our Invertebrata. 
I. Protozoa—Foramenifera and Radiolaria, Metazoa or Parazoa 
Sponges. 
II. Ccelenterata—Hydroida. 
III. Annuloida—Starfishes, &e., Ophiura. 
IV. Annulosa—-Crustaceans. 
V. Moillusca—Saxicava and Buccinuwm, Xe. 
In Lawson’s Ist Boulder (A) the most prominent attaché is 
an Ootheéca. Its first appearance suggested an ear of indian corn. 
A closer examination shows the ege capsules of a molluse, but 
different from the familiar clusters of Purpura lapillus. We 
find the two associated in one of the museum collections from 
Sable Island, 
