GENERAL MEETINGS. aT 
A. Weather prediction. 
B. Agricultural meteorology. 
. Medical meteorology. 
. Climatology. 
C 
D 
A. General. 
B 
. Observations, instruments, and 
& d methods. 
IV. Terrestrial magnetism. : Gl Waning: 
D. Distribution. 
E. Connection with meteorology. 
III. Applied meteorology. 
VY. Observations (meteorological and magnetic) classed geographically. 
These have been largely subdivided, the number of divisions em- 
ployed in the preliminary classification being 169. This number 
will be varied somewhat in revision, the final classification depend- 
ing largely on the number and character of the titles in each class. 
The following example will indicate the character of the subdi- 
vision : 
. General. 
. Description. 
. Height. 
II. A. 5. f. Aurora. 14 4. Frequency. 
5. Periodicity. 
6 
—_, 
ohre 
. Connection with meteorological phenomena. 
7. Connection with terrestrial magnetism. 
The classification has been from originals, where possible, and all 
resources of the libraries available have been used for this purpose, 
Where access to the work or article was not possible, correspondence 
was maintained for the explanation of doubtful titles. The assign- 
ment of cards to their subjects has been completed, but they are not 
yet arranged under their respective heads. Consequently, no state- 
ment of the number of titles under each class can yet be made, but 
a rough estimate shows that of the 50,000 titles about 5,000 will be 
under observations and 3,000 under terrestrial magnetism, leaving 
about 42,000 entries for meteorological discussions. 
The author index is similar to that adopted by Drs. Houzeau and 
Lancaster, giving under the full name of the author, and for each 
title, an abbreviation of the subject under which it is classed, the 
date of publication, and the reference. The index, as completed, 
contains about 12,500 authors, or an average of four independent 
titles for each author. A biographical note may be included under 
each author. 
The bibliography will be completed early in 1888, the only work 
now remaining being arrangement by subjects, revision, sub-class- 
