110 accounts, etc., of the british museum. 



Index Museum and Morphological Collections. 



All the dissections exhibited in the Hall have been examined 

 during the course of the year ; 22 dissections have been 

 re-mounted in alcohol, and four new preparations have been 

 added. 



The series of enlarged models in the middle of the Hall 

 illustrating the life-cycle of the Malarial parasite is undergoing 

 revision. In the House-Fly case, models have been introduced 

 of the eggs, larva and pupa, enlarged to the same scale as the 

 Fly model. 



In Bay VI. has been set out a series of 24 skins of Pigeons 

 illustrating the results of cross-breeding experiments on 

 Mendelian lines conducted by Mr. J. L. Bonhote and Mr. F. 

 Smalley, and a small addition has been made to the series of 

 cross-bred Maize cobs presented by Mr. R. H. Lock. 



Progress has been made with the series of preparations 

 designed to explain to the general visitor the elementary 

 principles of the classification of the animal kingdom, but it is 

 not proposed to put the preparations on exhibition until the 

 whole series has been completed. 



The series of specimens illustrating the structure of Flying 

 Animals, referred to in the last annual report (p. Ill), is now so 

 far advanced as to be ready for setting out in the Hall when 

 accommodation can be found. The part relating to Insects is 

 already displayed in a s|)ecial case, and will be ready for 

 exhibition when the explanatory labels have been printed. 



A series of 12 slides has been prepared for examination 

 under a microscope by the visiting public, showing certain 

 structural features of the wings of Insects and the feathers of 

 Birds that are too minute to be otherwise studied 



L. Fletcher y 



Director. 



British Museum (Natural History). 

 22 February 1913. 



