| Show I OF OP MODERN IS 1 Y The Tim leading problems of What may mar U bt called t astronomy mire arc ni It present II u more mora accurate determination tion of ot tho Iho ito earths form torm and itati HII of or the irregularIties of ur Its lis rotation The Tue tanner fanner Is lit I not flat neglected but bitt Just tow special Importance attaches tn tO I J Jud ud of tho thin slight of ut th the Ihl axis nils anti and the ed In tho length of ot the day dllY phenomena He lie II at nt the wry very bound my rum III y or of observation Tho Thu greatest d departure of the lie pole from Its mn since t Its wa first 11 00 fourteen years ago has haa ha hc n lt lest than 49 to feet teet It la is studied only Indirectly through h the Infinitesimal M In the latitudes of ot different oh tort e Hut lUt the motion slight Might aa as It t tIr Ir U Is now beyond question and anti the In Investigations Inu u of at Dr Chandler have ha shown that hint although apparently ex tX emely I in ilar It IB is In the main milin really governed by b laws and anil amenable to lu calculation The ThI theory however in is j Imperfect and In order ol er to tn obtain the necessary n data a 1 chain of lesi Mat statIons limn encircling the earth has been established o by b different gov govern rn menti There Thoro are six of ot these station nil all on o 0 GL near hoar tho the parallel of ot 19 29 it 1 minutes where continuous observation o t l ra tion of the latitude In lire arc to be kept up for fr nt at least 14 U Charles A Young III In January Success |
