232 



Lieut. Hennessey on Actinometrical 



[Dec. 22, 



Result-abstract of Actinometrical Observations at Mussoorie on an outer 

 range of the Himalayas, and at Dehra in the Dehra Dhoon, made bv 

 J. H. N. Hennessey, Esq., and W. H. Cole, Esq., M.A., of the 

 Great Trigonometrical Survey of India. 



Observations. 



Mean results at Mussoorie observed 

 with A and reduced to 32° Fahr. 



Mean results at Dehra observed 

 with B and reduced to 32° Fahr. 



In 



0- 



In 



x. 



Mean of the 

 apparent 

 times. 



Nos. 



In terms 



of A, 

 glass on. 



In terms 



of A, 

 glass off. 



Nos. 



In terms 

 of A, 

 glass on. 



In terms 



of A, 

 glass off. 



October 27, 1869. 



3 

 3 

 4 

 3 

 4 

 3 

 4 



2 

 2 



3 

 2 



3 

 2 



3 



h m s 

 11 49 30 

 9 30 

 11 

 29 30 

 31 



45 30 



1 7 



1 5 

 6 10 

 6 12 

 13 17 

 J 3 19 



20 24 

 25 31 



924 

 888 

 890 

 863 

 878 

 885 

 869 



1007 

 968 

 970 

 941 

 957 

 9 6 5 

 947 



i 5 



6 10 



11 15 



804 

 829 



8l 5 



876 

 904 



888 



October 28, 1869. 



4 

 6 



4 

 4 

 6 



4 

 5 

 5 

 5 

 5 



3 

 5 

 3 

 3 

 5 

 3 

 5 

 4 

 4 

 4 



10 57 



11 15 

 11 20 

 11 40 

 11 43 



000 

 2 15 

 21 30 

 33 30 

 43 30 



32 38 



874 



953 



16 26 



27 33 

 27 37 

 38 44 

 38 47 

 48 56 

 56 64 



807 



814 

 818 

 810 

 796 

 8ll 

 812 



880 



887 

 892 

 883 

 868 



884 

 885 



39 45 

 46 52 



865 

 876 



943 

 955 



53 59 



8S9 



969 



60 68 



851 



928 



69 77 



868 



946 



October 29, 1869. 



6 

 5 

 5 

 6 

 6 

 3 

 3 

 5 

 4 

 4 

 6 



5 

 3 

 5 

 5 

 4 



5 

 4 

 4 

 5 

 5 

 2 

 2 

 4 

 3 

 3 

 5 

 4 

 2 



4 

 4 

 3 



10 56 



11 9 30 

 11 21 30 

 11 43 



030 

 3 30 

 4 30 

 21 30 

 32 



41 



1 20 



1 33 30 



2 33 30 



2 54 3o 



3 10 30 

 3 21 









65 75 

 75 83 

 83 9i 

 92 102 

 103 113 



107 in 

 114 122 

 122 128 

 128 134 



135 139 

 140 148 



H9 157 

 157 163 



822 

 816 

 821 

 827 

 825 



821 

 832 

 821 

 826 



8°5 

 783 

 765 



739 



896 

 889 

 895 



901 



899 

 895 



907 

 895 



900 



877 

 853 

 834 

 806 



























78 82 



903 



984 



83 91 



885 



9 6 5 









92 102 

 102 no 



879 

 875 



958 

 954 



























October 30, 1869. 



4 

 6 



5 

 6 



5 

 6 



4 



3 

 6 



3 

 5 

 4 

 5 

 4 

 5 

 3 

 2 



5 



11 40 

 11 43 

 11 43 30 

 000 

 1 30 

 030 

 17 

 18 30 

 23 



113 119 



899 



980 



164 170 

 164 174 



175 183 

 175 185 



186 190 

 186 196 



837 

 845 



828 

 831 



843 

 842 



912 

 921 



9°3 

 906 



919 

 918 



in 119 



120 130 

 122 130 



902 



899 

 896 



983 

 980 



977 



131 137 

 133 137 



905 

 902 



986 

 983 









