W.B, -2- 
your manuscript is sent on I will take Goldman's reports upon 
his observations in southern Sonora during éhe- winters work there 
and add them to the matter of the McLeod and Frazar collections, 
and in this way try to get together all we know of the birds 
south of Guaymas in Sonora, I would suggest that the title 
of the paper include ‘notes on the birds of west central Chihuahua 
and southern Sonora, Mexico, based upon collections and notes 
made by Frazar, Goldman, and Mcleod.' Then I will make some 
general introductory notes upon the region, based upon Goldman's 
reports and also upon whatever matter you have which can be 
utilized in giving a general idea of the region, In this con- 
nection it will be well for you to have copied what you have 
already published in general notes upon the district where 
MeLeod and Frazar worked in your papers describing new birds 
obtained by them, If you can add anything to this it will be 
of value, since they worked a section not visited by Goldman, his 
work having been a little south. Taking it altogether the 
paper should be a valuable faunal contribution to the natural 
history of Mexico. 
How are you coming on with the 'Birds of Cambridge?' Hen- 
shaw tells me that you were nearly through with it when he left 
and were planning to at once take up the other part of the work. 
This is good news and I hope that nothing will interfere with 
your completion of the second part at an early date. 
Have you any drawings of the McLeod-Frazar birds which you 
could use for illustrations in our paper? It strikes me that 
it would be a good idea to have a number of illustrations, pro- 

