174 DR. C. B. PLOWRIGHT ON SOLAR HALO AND MOCK SUN. 
In the department of Ethnology Dr. Hose has also been a bene- 
factor to the Museum, having contributed twelve examples of 
Native Arms and Domestic Implements from Baram, in the district 
of Sarawak, Borneo. Other native productions from Fiji and 
Queensland have been added, which are particularly acceptable, as 
the greatly increased intercourse with these peoples is rapidly 
rendering genuine relics of their primitive savagery scarce and 
difficult to obtain. 
The Library also has been in receipt of numerous and valuable 
additions, among the chief of which are eighty-eight volumes on 
Natural History, and other publications from the Trustees of the 
British Museum, and a number of books from the U. S. National 
Museum and Department of Agriculture. Mrs. Bridgman has also 
added eighteen volumes to the Entomological Library of the late 
Mr. Bridgman, which was presented with his valuable collection of 
Hymenopterous Insects a few years ago. These only form a portion 
of an unusually long list. 
109,228 persons passed the turnstiles during the year 1900. 
VIII. 
SOLAR HALO AND MOCK SUN. 
By C. B. Plowright, M.D. 
Read 29th January, 1901. 
On the afternoon of Saturday, 22nd December, 1900, I had the 
good fortune to witness the above phenomena, a short account 
of which may be of interest. In the first place, solar haloes are 
not very uncommon, but they are more frequently observed in and 
around London than with us. This may be due in part to the 
greater number of persons dwelling in the metropolitan area than 
in the more sparsely populated county districts.; but it is more 
