PR b: FACE 



The collectors of the I^rrata lor the W^ori.d W'katukr Rf.coriis 

 are j^reatly indehted to the officials in charge of the various weather 

 services and meteorological observatories of the world who have not 

 only furnished the original data, but most of whom have compared the 

 published data with the originals and sent in corrections. Corrections 

 have also been received from students at various tmiversities who 

 have used the data. 



Many of these corrections are small and well within the ])robable 

 errors of the observed values, so that the question was raised as to the 

 advisability of publishing small corrections ; but it was decided to 

 publish all the corrections received and leave it to the judgment of the 

 students using the data as to what extent corrections were desirable. 



Some of the data have not yet been compared with the originals so 

 that the Hst is not complete. 



