6 CARNEGIE INSTITUTION 



Page 



Plans and estimate of cost 66 



Principal station (A) 66 



Plan of work 67 



Buildings 68 



Spectroscopic and bolometric laboratory 68 



Reflector dome 68 



Office building 68 



Dwellings for members of staff, etc 69 



Stations B and C, for solar observations at high altitudes and studies 



of atmospheric absorption 69 



Staff 70 



At principal station (A) 70 



At stations B and C 70 



Appendix A. Report on certain possible sites for astronomical work in Cali- 

 fornia and Arizona ; by W. J. Hussey 71 



Appendix B. Letters relating to the Southern and Solar Observatories 105 



The undersigned, members of a Committee appointed to con- 

 sider certain large projects in astronomy, have given close attention 

 to that duty and herewith present the conclusions reached. Other 

 matters still pending or requests from the Trustees may necessitate 

 further communications which we shall take pleasure in presenting 

 as occasion may arise. 



I. General Recommendations. 



We strongly urge the adoption of each of these projects submitted 

 to us for examination, so far as this can be done consistently with 

 other obligations which the Carnegie Institution may feel bound to 

 assume. Our recommendations refer to definite programs of scien- 

 tific work to be accomplished and not to the establishment of per- 

 manent institutions. Should these programs be carried to a suc- 

 cessful issue, we are aware that in the meantime other demands for 

 astronomical work quite as important and not less pressing may 

 arise. The question whether the Carnegie Institution shall consider 

 it advisable to take them up is one which we will not attempt to 

 discuss at the present time. 



For the present we urge the establishment of an observing station 

 in the southern hemisphere for the accomplishment of certain defi- 

 nite works of observation, so arranged that their completion may be 

 anticipated within a period of ten or twelve years from the time of 

 beginning. 



