occupied by Birds in Incubation. 



57 



out, but I invite those interested in the subject to consult 

 the volumes for themselves and to draw their own conclusions. 

 It is a pity the methods employed to ascertain the duration 

 of incubation are not explained. 



The following Table contains the results of some further 

 experiments made by me during the summer of last year on 

 the same lines as in 1889 and 1890. 



In my former paper the opinion was expressed (p. 89) 

 that the period in the case of the Redshank had been under- 

 stated by previous writers, a view' which the above-mentioned 

 incubator-period fully sustains. 



Half a dozen eggs of the Storm Petrel, kindly procured 

 for me by Messrs. Harvie-Brown and Eagle Clarke during 

 their cruise among the Hebrides last summer, were placed in 

 the incubator on 3th July, and it was with peculiar interest 



