Figure 35. Single conductor and multiconducl-or electrical cables 

 with wood bait pieces. 



A light to moderate growth of hydroids was present on the insulations, with 

 some of the hydroids growing to about 3/4 Inch long. No detrimental effects on 

 the materials were noted at the site of hydrold attachment. 



Laminated Plastics . The 1 x6x 1/8-inch laminated plastic materials made of 

 epoxy, phenolic, and malamine resin filled with either cotton fabrics, paper, glass 

 fabrics, or nylon fabrics were not damaged by biodeterioration or by the deep sea 

 environment. The moisture absorbed by the plastics was determined by weighing 

 each of the test specimens before and after exposure in the sea. The results are 

 presented in Table 8. 



Glass . A considerable amount of hydrold growth was found adhering to the 

 top and the bottom sides of the glass slides (Figure 36). When the growth was 

 removed and the glass surface cleaned and examined under a microscope, the 

 surface of the glass was smooth and no etching or frosting of the surface by micro- 

 organisms was evident. 



43 



