Page 



35. Monthly surface isotherm chart, 9, 11-15 April 1973 39 



36. Monthly surface isotherm chart, 16, 17, 19 May 1973 40 



37. Monthly surface isotherm chart, 19-21, 23-25 June 1973 . . 41 



38. Monthly surface isotherm chart, 17-19, 21 July 1973 42 



39. Monthly surface isotherm chart, 14, 16, 20-23 



August 1973 43 



40. Monthly surface isotherm chart, 18-22 September 1973 ... 44 



41. Monthly surface isotherm chart, 15-19 October 1973 45 



42. Monthly surface isotherm chart, 12-16 November 1973 ... 46 



43. Monthly surface isotherm chart, 10-13 December 1973 ... 47 



44. Monthly surface isotherm chart, 14, 16-18, 21 



January 1974 48 



45. Monthly surface isotherm chart, 12-14 February 1974 .... 49 



46. Monthly surface isotherm chart, 19, 20, 22 March 1974 ... 50 



47. Monthly surface isotherm chart, 22-24, 26 April 1974 51 



48. Monthly surface isotherm chart, 20-22 May 1974 52 



49. Monthly surface isotherm chart, 19-21 June 1974 53 



50. Monthly surface isotherm chart, 15-17 July 1974 54 



51. Monthly surface isotherm chart, 19-22 August 1974 55 



52. Monthly surface isotherm chart, 16-20, 23 



September 1974 56 



53. Monthly surface isotherm chart, 15, 17, 18 



October 1974 57 



54. Monthly surface isotherm chart, 19, 22, 23 



November 1974 58 



55. Monthly surface isotherm chart, 10-12 December 1974 ... 59 



56. Monthly surface isotherm chart, 1 February 1975 60 



57. Monthly surface isotherm chart, 27, 28 February 1975 .... 61 



58. Monthly surface isotherm chart, 18, 20 March 1975 62 



59. Monthly surface isotherm chart, 29, 30 April— 2 



May 1975 63 



60. Monthly surface isotherm chart, 20-22 May 1975 64 



61. Monthly surface isotherm chart, 10-12, 18-20 June 1975 . . 65 



62. Monthly surface isotherm chart, 22, 24, 25, 29-31 



July 1975 66 



63. Monthly surface isotherm chart, 19-21 August 1975 67 



64. Monthly surface isotherm chart, 9-11, 16-18 



September 1975 68 



65 Monthly surface isotherm chart, 21-25 October 1975 69 



66. Monthly surface isotherm chc rt, 18-20 November 1975 ... 70 



67. Monthly surface isotherm chart, 16, 17, 19, 22 



December 1975 71 



68. Monthly surface isotherm chart, 20, 21, 23, 24 



January 1976 72 



69. Monthly surface isotherm chart, 10-12, 20, 21, 23, 24 



February 1976 73 



70. Monthly surface isotherm chart, 11, 12, 14, 23-25 



March 1976 74 



71. Monthly surface isotherm chart, 20-22 April 1976 75 



72. Monthly surface isotherm chart, 18-21 May 1976 76 



73. Monthly surface isotherm chart, 8-10 June 1976 77 



74. Graph of the plotted annual range and weighted mean 



temperature and latitude distribution of marine animal 



observations, July 1969— June 1976 78 



VIII 



