New Astronomical Photographs 



From the Yerkes 



Observatory 



Supplied in the form of lantern slides for 



paper prints for detailed exam 



or illustrative 



purposes, or in larger sizes as transparencies to be 

 hung in class-room or study. 



Appendix B to Catalogue No. i has just been issued, 



and contains about 150 subjects not heretofore listed. 



Of these, the following are worthy of particular men- 

 tion: 



THE SUN. A sun-spot at five different levels; new erup- 

 tive prominence showing great changes; spectro- 

 hel.iogram illustrating development of spot and 



rotation of sun 



H 



THE MOON. The earth-lit moon; total lunar eclipse; 



lunar stereograms. 



THE PLANETS. Mr. Barnard's 



new 



,, T . photographs of 



Venus, Jupiter, and Neptune, taken with 40-inch 

 refractor, and new drawing of Saturn; Transit of 

 Mercury. 



COMETS;, t Giac °bini's Comet of 1905-1906; a series of 



photographs of Daniel's Comet of i 9 o 7 and More- 

 house's Comet of 1908. 



THE MILKY WAY. Recent photographs taken with the 



rJruce lelescope. 



NEBULAE. Late photographs with and without color- 



screens. 



SPECTRA Spectroscopic binaries showing marked shift 



ot fraunhofer lines. 



SS^'Jr* ° f " PageS ' WUh A ^ ndi * A ('904), -eluding 20S 

 subjects, mD be sent on request, together with Appendix B. 



ADDRESS DEPARTMENT P 



B* Universit y of Chicago Press 



CHICAGO 



ILLINOIS 



