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Smithsonian miscellaneous collections . lo o looo tt I- r^ ii r>. cs ^ O -I w o ON 0\ O\00 ON o\ o • \0 fO 1- 00 lOO Tj-o N O On9, O ^N CnOO ^ t^ J^ hh 04 CM ?-Cq On OnOO 00 CnoO 00 On Cn On On > OO 0\ moo On In., in inu-i rj ^v-i cq 00 0\ fOOO On tN. IT) lovO 0) 00 |_HHl-fl-|t-IOOl-ll-ll-(0 V —^ r^ fOOO 1- U-) ro lO liO^O lo roM ?^0)J^0»fO-r)-O U-500 1- NO n; 00 CNcoooooocooooco oon _>. O 00 00 CO rO1-ON ONfH o rr> rr), rt CN ON lo o looo rr 1-1 tx 1-1 IX !o OOh-ii-iOOnOn OnOO On On ei O <D 1-1 00 too -^O (N) O CnCQ NO JN. CnOO 1* t^ t^ -1 CN) 0) ?-^ CS ONOO 00 ONOO 00 ON O ON ON eg i_,i-ii-ioi-ii-<i-ii-i«-iOO r<^c50 1-1 lo n u^ vovo »n f<o fs. CN) ix 0) CO -r o inoo 1-1 vo ^ ONOO 00 00 00 00 00 00 OnOO 00 ONt^CNTi-CNrxc c*2o 0\fo TJ-OO C» On TJ- tx CN CO 1- ^00OnOnOvOOOOQOOOn NO. 5 PRECIPITATION AT ALBANY, N. Y.—ABBOT. Figs. 2 (left) and 3 (right).—Fig. 2, combination of six separate determinations ofthe 115-month periodicity into one general mean, for times when Wolf sunspot num-bers exceed 20. Fig. 3, same as figure 2 for Wolf sunspot numbers less than 20. 10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 121 tabulation with contrary shiftings to those indicated by figures at-tached to the curves A2, B2, and C2, in figures 2 and 3, That is, forexample, for 2 in tabulating for syntheses. It will be clearto the reader that the use of departures from the average comprisinggeneral means, such as D, will tend to reduce the large accidentalerrors in the syntheses, such as were caused in the Peoria paper bythe paucity of data then used in forming mean values. This improve-ment in accuracy, together with the elimination of an obvious sourceof error by cutting off overriding periodic values of shorter lengthsfrom the longer periods, already explained above, make the Albanyresults much b


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