306 NATURAL SCIENCE [May 



It is a move similar to that made by the Australian Museum at 

 Sydney and the Whitechapel Museum, London, of holding temporary 

 exhibits of cut flowers. 



We notice that the Chadwick Museum is making progress in 

 other directions. It has acquired a collection of British birds' eggs 

 containing 229 species, and the number of birds' nests has been 

 increased, chiefly by a loan for an indefinite period by Mr F. W. 

 Peaples. During the past year 2500 specimens of British insects, 

 chiefly British Coleoptera and Lepidoptera, have been acquired. A 

 large Polar bear has been presented by Messrs Jennison ; and the 

 mammalian collection has been rearranged in a new large cabinet. 

 Numerous visits have been made by classes from the elementary 

 schools and by Natural History Societies from the neighbourhood. 

 The Bolton Botanical Society holds its fortnightly meetings in the 

 building. Tlie whole Ecport gives evidence of praisewortliy activity. 

 The curator, who also combines the functions of meteorological 

 observer, is Mr W. W. Midgley. 



Pigeon-holes for Zoologists 



In our April number we gave some account of the present position 

 of the International Bureau for the Biljliography of Zoology at 

 Zurich, and we then stated the facilities that arc now offered to 

 subscribers. By arrangement with Dr Field we are able to present 

 purchasers of the present number with the scheme of classification 

 now adopted for a portion of the subjects dealt with by the Biblio- 

 graphic Bureau, and we need only remind our readers that they can 

 purchase, in card-catalogue form, the entries relating to any one of 

 these headings or to any combination of these headings. For ex- 

 ample, one can order the entries relating to 591412, the anatomy of 

 the heart; or 59932, Ilodentia ; or 59(4346) zoology of Baden; or 

 59932 (4346), Eodents of Baden. We are told that about 100 

 entries are printed every day under the headings contained in this 

 list, and this gives some idea of the flood of literature under which 

 the isolated worker must sink if he does not use some such means as 

 this to help him. This list need not be regarded merely as a sale- 

 catalogue, but it may offer suggestions to workers as to a plan of 

 arranging their own pamphlets or even manuscript notes. ]\Iany 

 people no doubt like to make their own pigeon-holes, but others 

 never find the time for that, and are glad to take them ready- made. 

 As has often been pointed out, this system of division and notation 

 permits of indefinite extension ; and in this especially lies its value 

 to the private worker. 



