368 TEREDO NAVALIS IN NOVA SCOTIA — MURPHY. 



lide which is constantly found wherever the Teredo exists. His 

 eggs and embryos are met with in the midst of those of that 

 mollusc. 



Kater has remarked that the adult annelide leaving the mud- 

 dy bottom where he has hibernated, and in which the piles are- 

 driven, climbs along the surface of the wood toward the opening 

 made by the teredo ; there he sucks away the life and substance 

 of his victim ; then, slightly enlarging the aperture, he pene- 

 trates and lodges in place of the teredo. All the early writers- 

 on this subject state that they have found this annelide in wood 

 at the same time with the teredo. It is remarkable that a simi- 

 lar annelide, and perhaps the same, has been found in the cavi- 

 ties hollowed out in stone by the pholades. 



We have an annelide in Nova Scotia that hibernates in winter 

 as represented, and is busy in our mussel beds in summer. I 

 cannot say whether it is the species or not alluded to by M. 

 Andrews. I have not heard of its being found in the cells of the 

 teredo. 



Experiments in the preservation of wood from the attacks of 

 the Teredo. 



The trials made by the Commission may be placed under three 

 principal groups : 



1. Coatings applied to the surface of wood, or modifications 

 of the surface itself. 



2. Impregnation of wood with different substances, which 

 modify the interior as well as the surface of the wood. 



3. Employment of exotic woods, other than ordinary woods 

 of construction. 



Coatings applied to the surface of wood. The methods be- 

 longing to this group; which have been examined by the Commis- 

 sion, are the following : 



1. Method invented by M. Clawren, and kept secret by the 

 inventor. 



2. Metallic paint, invented by M. Clawren, and likewise kept 

 secret. 



3. Method of M. Brinkerink, consisting of a mixture of Rus- 

 sian talc, resin, sulphur, and finely powdered glass, applied hot 



