RHPORT OF ADVISORY COMMITTEE ON ASTRONOMY 



CONTENTS. 



Page 



Support of Astronoui}' in the United States 88 



Need for More Workers 88 



Proposal for a Southern Observatory 89 



Cooperation in Research 90 



Problems for Research 90 



The Sidereal System 90 



The Solar System 91 



Publication of Results 92 



Astroph3'sical Investigations 92 



In Relation to New Instruments 93 



APPENDICES. 



Appendix A. — General Plan for Furthering Special Researches in Astron- 

 omy ; by the Committee 94 



Sub-Apphndtx. — Proposal for a Distinctly Solar Observatory ; byS. P. 



Langley 104 



Letter from Langley to Walcott on same subject no 



Appendix B. — Progress and Present State of Astronomy ; by Lewis Boss. . 112 

 Appendix C. — Progress and Present State of Certain Departments of Astro- 

 physical Research ; by George E. Hale 128 



Appendix D. — The Quantity and Nature of Solar Radiation ; by S. P. 



Langley 144 



Appendix E. — Pre.sent State and Needs of Astronomical Research ; by 



Simon Newcomb 147 



Appendix F. — Progress and Present State of Celestial Photometry and 



Photograph}' ; by E. C. Pickering 152 



To the Board of Trustees of the Carnegie Institution. 



Gentlemen : Out of the multitude of problems in general and in 

 detail which your Committee in its advisory capacitj' has studied with 

 care, the importance of certain general views concerning astronomical 

 interests has impressed itself on our minds. We think we ought to 

 state some of the most important of these at the outset, because of 

 their general application to all recommendations which we, as ad- 

 visers, de.sire to present for the consideration of the Carnegie 

 Institution. 



(87) 



