8 CHEBUCTO NULLIPORES—HONEYMAN. 
of this rock shows the existence of Biotite, Hornblende and 
crystals of a white feldspar. The polariscope shows the feldspar 
to be trichroic. The colours run in parallels, and the crystals 
shew beautiful striation. 
4. Cranberry Point Diorite.—Macroscopically examined 
this rock shows abundance of Biotite and Hornblende. The 
Polariscope shews triclinic feldspar. This and the Porphyrite 
of Sandy Point seem to be closely related, but different from the 
Jebogue Point Dolerite. These two seem to be intrusive, but 
of a Lower Silurian age. 
In considering the subject of the age of the gold-bearing 
rocks, it is evident that these crystalline rocks must be 
eliminated. 
5. Yarmouth Harbour Rock.—This singular rock furnishes 
a very interesting section. It is composed of a glassy, undeter- 
mined mineral and hornblende. Ihave not been able to ascertain 
the nature of the former by the polariscope ; portions of it seem 
to be a glass. One of the green hornblendic patches has a 
singularly pretty inclusion. In a small glassy area, bounded by 
two straight sides and two curved, is a perfectly round glassy 
inclusion. Turning the polarizer the inclusion darkens, until 
space and inclusion peer altogether black. 
Sections of other crystalline rocks are under examination. 
They will be the subjects of future notes. 
Art. II.—Cursucro NULLIPORES, WITH ATTACHES.—By PRoF. 
D. Honryman, D.C. L., &e. Curator of the Pro- 
vincial Museum. 

(Read December 11, 1882.) 
OuR specimens appear to differ in their mode of growth. 
There is seemingly a vertical and a horizontal growth. _Speci- 
men No. 1 exhibits both. The upward growth developes into 
branches; the horizontal increases the body by layers, forming 
a limestone, having a concretionary and amorphous aspect. 
