42 



Clyde-River Oysters. 



No. 48. Sample from 14 to 20 feet depth of water; bottom shelly 

 and shingly. 



49. Sample from 25 to 35 feet depth of water; bottom, hard 



slaty bed with large loose rock. 



50. Sample from 12 to 20 feet depth of water ; bottom gravel 



and shell. 



51. A hard rock-bed with large loose stones; depth of water 



about 40 feet. 



52. Soft shingly rock-bed of a yellow colour; depth of water 



about 14 to 20 feet. 



53. Shell and shingly bed, with a rocky shore ; depth of water 



about 20 feet. 



54. Hard rocky bottom ; depth of water about 60 feet. 



55. Hard slaty-rock bed ; very few shells ; depth of water 



about 40 feet. 



56. Soft yellow-rock bed; no shingle; depth of water from 



14 to 20 feet. 



Canideii- Haven Oysters. 



No. 57. " Stinker's Creek;" depth of water 6 to 10 feet, with pipe- 

 clay and ironstone bottom covered with oyster-shells 

 and sandy mud. 



58. Lower Bed, Maine River; depth of water 10 to 13 feet, 



with broken shells and sandy mud bottom. 



59. Middle Bed, Maine River; depth of water 6 to 10 feet, 



with shells and sandy mud bottom. 



60. Known as the upper or top bed, Maine River. 



61. The upper or top bed, Maine River; depth of water from 



6 to 9 feet, with oyster-shells and silty bottom. 



Lake-Tiiross Oysters. 



No. 62. True Mud-Oyster. 



Ostrea edulis, Linn., var, purpurea, Hanley ; O A/igasii, 

 Sowerby. 



