391 



considerable irregularity iu the receipt of these publications by this 

 Office. The manner in which the diflerent series of the publications of 

 some stations are numbered makes it impossible for the Office to be sure 

 that it has received all the publications of these stations up to any 

 given date. For instance, inquiry was recently made why a station 

 bulletin issued iu the early part of 1890 had not been noticed in the 

 Eecord. The reply was that the Office was not aware of the existence 

 of that bulletin. The author of the bulletin thereupon sent the Office 

 a copy. It was afterwards discovered that the same station had issued 

 still another bulletin in this irregular series of which it gave no account 

 to this Office until it sent in at the end of the year the list of bulletins it 

 had published during the year. These cases are, however, relatively few. 

 When a volume of the Kecord is completed it may be taken for granted 

 that substantially all the publications of any station issued u\) to the date 

 of the last one abstracted have been mentioned in the Eecord. 



