240 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
which gives the temperature of the air and surface water as observed at three light- 
houses iu the sponging region. It is stated by Bidder (loc. cit.) that u the Levant 
variety lives where the atlas shows a mean annual [air?] temperature of about 7° F. 
below that of Florida, and the Adriatic variety at a mean temperature of about 7° F. 
lower still.” 
Statement of the mean air and surface water temperatures at points on the coast of Florida in the 
vicinity of the sponge- (/rounds. 
[Depths of water where observations are made: Fowey Kooks. 5 feet; Carysfort Reef, 3J feet; Dry Tortugas, 4 feet.] 
1895. 
Fowey 
Kocks. 
Carysfort 
Reef. 
Dry Tortu- 
gas. 
1896. 
Fowey 
Rocks. 
Carysfort 
Reef. 
Dry Tortu- 
gas. 
Air. 
Water. 
Air. 
Water. 
Air. 
Water. 
Air. 
Water. 
Air. 
Water. 
Air. 
Water. 
January 
February . . . 
March 
April 
May 
June 
July 
August 
September.. 
October 
November . . 
December . . . 
Annual 
o F . 
70.41 
68. 87 
73. 23 
75. 50 
78. 40 
80. 35 
82.83 
83. 93 
84. 47 
79. 47 
75. 82 
74. 58 
° F. 
72. 98 
68.71 
73. 45 
74.78 
78.18 
79.38 
82.70 
83. 75 
84. 70 
78.88 
1 75.88 
71.64 
° F. 
70. 95 
64.17 
72. 32 
75. 35 
79. 85 
83. 22 
86. 60 
84. 42 
84. 13 
82. 75 
77.50 
69. 75 
o F . 
71.98 
70. 45 
72. 16 
73. 53 
78. 45 
81.73 
85.40 
84. 30 
84.31 
81.38 
77. 48 
73. 54 
o F . 
71. 47 
66. 48 
73.87 
76.20 
81.27 
83. 25 
84. 32 
85. 05 
84. 33 
81. 27 
77.87 
70.75 
op. 
73.03 
67. 93 
73.41 
74 98 
80.07 
81.01 
84. 01 
84 97 
84. 60 
80. 97 
78. 13 
73. 45 
January . . 
February . 
March 
April 
May 
June.* 
July 
August. . . 
September 
October . . . 
November 
December. 
°F. 
74.60 
72. 38 
76. 85 
76. 40 
83.77 
85. 85 
86. 48 
88. 58 
87. 53 
83. 15 
83.45 
77.11 
81.32 
op. 
69. 18 
70.47 
72. 13 
75.10 
79. 60 
82.66 
85. 23 
86.58 
86.16 
82. 18 
82.00 
o f. 
69.20 
69. 38 
72. 37 
77.37 
80. 50 
83. 47 
84. 80 
85.88 
85. 03 
82. 62 
80. 90 
72.63 
o f. 
72. 20 
72. 31 
72. 05 
76.45 
78. 31 
81.90 
83. 90 
87.74 
83. 73 
81.15 
79. 51 
o f. 
68. 93 
68. 87 
71.22 
76. 41 
81. 02 
82. 82 
83.25 
85. 92 
84.13 
81.98 
77. 75 
71.95 
o F. 
70. 17 
70. 15 
70. 43 
75.61 
79.41 
82. 01 
82. 60 
85.73 
84.88 
81.08 
74! 60 
77. 31 
77. 08 
77. 58 
77. 89 
78.01 
78.04 
Annual 
mean . 
78.66 
78.68 
78.49 
77. 86 
77. 99 
Washington, D. C. 
