126 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



jects, the demand for all publications has increased considerably. It 

 has been the policy to comply with these requests in such numbers 

 as the existing regulations will permit. Applications for publica- 

 tions from individuals receive prompt and careful attention. In case 

 the publications are exhausted or can not be supplied the applicant 

 is so advised. 



During the year several new publications were printed, including 

 a chart of Description of Cloud Forms and two Monthly Weather 

 Keview Supplements, entitled " The Spring Floods of 1922 " and 

 " Thermal Belts and Fruit Growing in North Carolina." These 

 supplements contain valuable meteorological data for which there 

 has been a considerable number of requests from institutions, engi- 

 neers, and specialists in this particular work. 



Paid subscriptions for the daily weather map have increased. In- 

 surance companies, specializing in rain insurance, have found the 

 daily weather map and climatological statistics an important factor 

 in their work. The increase in subscriptions for the Monthly 

 Weather Review through the Superintendent of Documents has made 

 it necessary to furnish additional copies to meet the public deinand. 

 The present subscription price of the Monthly Weather Review is 

 $1.50 per year, payable in advance to the Superintendent of Docu- 

 ments, Government Printing Office, Washington, D. C. The Monthly 

 Weather Review Supplements are available for purchase through 

 that office at a price furnished upon application, provided the edi- 

 tion is not exhausted. They are not included in the subscription for 

 the Monthly Weather Review. The mailing lists of the Weather 

 Bureau have been revised and brought up to date, resulting in the 

 discontinuance of a number of subscriptions. 



Under the regulations prescribed by the congressional Joint Com- 

 mittee on Printing, quarterly printing-plant reports and annual 

 inventory reports from 97 field stations and the printing office, Wash- 

 ington, D. C, were rendered to the chief, Division of Publications, 

 Department of Agriculture, for transmittal to the committee. The 

 data furnished on each of these quarterly reports include number 

 of jobs, total number of copies, number of type pages per copy, num- 

 ber of illustrations, total cost of printing ancl binding, editorial cost, 

 and the proportionate salary for the quarter, and number of 

 employees engaged on the work. Samples of all work performed 

 during the quarter are attached to these reports. The inventory 

 report rendered annually includes the printing and material and 

 equipment on each of the field stations and the printing office, Wash- 

 ington, D. C., with the cost of each item of machinery or equipment, 

 and the estimated value at the present time. These reports also show 

 whether the plant is housed in a Government-owned building or 

 rented property. Contract-printing and printing-machinery reports 

 are also rendered quarterly. 



INVESTIGATIONS IN SEISMOLOGY AND VOLCANOLOGY. 



The important work of collecting and publishing earthquake data, 

 begun December 1, 1914, has been continued during the year. 



Instrumental records have been obtained by instruments owned 

 and operated by the Weather Bureau at Washington, D. C. ; North- 



