. Bulletin. Science. j-inGGm pstcrometro 1 1 : ' 1 \f 1 1 1 1 1 M Mâ -.:' \ |âfe^T?- i?i 1 1 1 ; 1 1 1 1 t 1 1 ; 1 1 iB ll-l 1 1 1 . 1 1 i 1 1 . 1 â MM. â â /: j 1 r " 1 1 II MM 1 1 '=^,"1 1 1 1 MM 1 ± 1 1 1,1. â 1 ( ' iâ1ââ¢>-"l > 1 1 1 MM 1 Ml â¢i=M=EfeL i 1 1)1] 1 1 J_ 1 j MM â A 1 1 1 1 ~l" 1 I'l" r-M h spT'i â 1 . 1 1 1 1 1 1 Mil 1 1 1 -I 1 1 -T^ Mrf^y^i 1 1 1 M 1 1 1 ' 1 111 1 1 1 1 1 1 i&i^=;=^i, : 1 : Mil 1 1 1 ! ' 1 1 1 1 . â i4ti : 1 1 11 1 1 1 '. ^^f^TtT'- ' ' M 1 ! 1 , 1 my _ljt: u"'"' 1 1 1 -: 1-^ '!TtJ i-1 .ill 1 1 ;rl-


. Bulletin. Science. j-inGGm pstcrometro 1 1 : ' 1 \f 1 1 1 1 1 M Mâ -.:' \ |âfe^T?- i?i 1 1 1 ; 1 1 1 1 t 1 1 ; 1 1 iB ll-l 1 1 1 . 1 1 i 1 1 . 1 â MM. â â /: j 1 r " 1 1 II MM 1 1 '=^,"1 1 1 1 MM 1 ± 1 1 1,1. â 1 ( ' iâ1ââ¢>-"l > 1 1 1 MM 1 Ml â¢i=M=EfeL i 1 1)1] 1 1 J_ 1 j MM â A 1 1 1 1 ~l" 1 I'l" r-M h spT'i â 1 . 1 1 1 1 1 1 Mil 1 1 1 -I 1 1 -T^ Mrf^y^i 1 1 1 M 1 1 1 ' 1 111 1 1 1 1 1 1 i&i^=;=^i, : 1 : Mil 1 1 1 ! ' 1 1 1 1 . â i4ti : 1 1 11 1 1 1 '. ^^f^TtT'- ' ' M 1 ! 1 , 1 my _ljt: u"'"' 1 1 1 -: 1-^ '!TtJ i-1 .ill 1 1 ;rl-^ MM. ^'^ ' 1 1 ^r^ , i i- 1 -1 1 MM 1 1 T, 1 i 1 1 11 I : 1 ;^i==d '" iâ:-1 1 , I 1 1 1 â 1 1 1 A^i ^ 1 1 i 1 ~\, ; -1 .â . , â \ "p 1 1 1 1 \'-'â^ \'.r- ' M 'M m^\ â ? i 1 1 1 1 i * i , 1 1 \ 1 1 ? 1 1 MM I'll ; 1 1 1 1 I 1 . I â 1 1 1 II 11 if' 1 1 1 [ I 1 \-i^ ' M -M :-{iLi_ 1 1 i i 1 1 III. 1 II 1 1 1 1 1 1 1 M â -' ^; l-r^ 1 il 1 1 1 1 ; M '/ -' 1 1 1 1 âI. 1 1 : 1 , 111. 1 ' y ' 1 1 ' MM l^^^fe=t=--^ ^'. 1 1 1 1 1 1 i 1 / _ 1 1 ! MM. ââ¦â1â 1 1 â rr 1 f 1 MM MM . 1 h' M ^ i , 1 1 1 1 , 1 ; ' 1 .J 1 M [ -L-J34=f= =r^=^-"- â 1 , ; 1 1 â 1 t 1 ! 1 1 1 ^^ â â â,- 1 1 1 1 MM 1 "^ i vr\ 1 1 M ; M. M lA -i-V-^. -r ^^^â ^\ M J . i 1 1 Vr M 111 1 11 1 1 1 1 1 .-1. M 1 ^ Figure lo.âChart from Seed's meteorograph. (From Lacroix, op. cit. footnote 22.) wind.'" Beckley and Draper caused it to move a pen- cil through gearing; the others used with it electro- magnetic counters actuated by rotating contacts. '" T. R. Robinson, "Modification of Dr. Whewell's Anemom- eter for Measuring the Velocity of the Wind," Report of the 16th Meeting of the British Association for the Advancement of Science, 7846, 1847, pt. 2, p. 111. As has been indicated, the Signal Corps used all six systems, a panopoly of gadgetry which must have been wondrous to behold. Its Secci meteorograph, which had attracted much attention at


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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience