An Excursion to the Crag District. 33 



COLOUES OF STAES. 



In the last number of the Intellectual Observer were 

 some remarks on the desirableness of noting on an extensive 

 scale the existing colours of stars, in the hope of obtaining 

 more extensive and decisive evidence as to their presumed 

 variability. The following instance will tend to show that a 

 little attention bestowed in this direction might be well repaid. 



1865. June 22. Happening to be looking at the beautiful 

 group, d 2 Cygni (No. 58 of our list), without at the time 

 knowing the object, I noted the colours (the letters indicating 

 the magnitudes), A orange yellow, sapphire blue, B white, 

 or very pale yellow, with a sort of cast of blue in it, but cer- 

 tainly not at all like 0. The latter star I found kept its colour 

 when A was out of the field. I subsequently found what I had 

 been looking at, and that each of the smaller stars had been 

 recorded by Struve *"•" ccerulea," 1835*95, and by Sm. '"''ceru- 

 lean blue," 1838*67, with the addition that at Dorpat the two 

 smaller stars preserved their blue colour when the larger star 

 was hidden. On the contrary, I found that in an old obser- 

 vation of my own, 1850 '7 7, with 3 T V inches of aperture, I 

 made B white, C blue; there being no difference among the 

 observers as to the colour of A. I have subsequently received 

 from more than one quarter a full confirmation of my belief 

 that the two stars are no w no longer of the same colour ; and 

 the change, as it appears, must have taken place in the period 

 intervening between 1838 and 1850. Without laying too 

 much stress upon this case, we may at least adinit that it fur- 

 nishes an appropriate stimulus to further inquiry. 



AN" EXCURSION TO THE CRAG DISTRICT. 



BY HENRY WOODWARD, E.G.S., E.Z.S., 



Or THE BEITISH MUSEUM. 



{With a Coloured Map.) 



There are numerous localities in our island but seldom explored, 

 where the holiday-maker and amateur geologist may collect 

 for himself, and in so doing learn far more about rocks and 

 fossils than he can ever do from books alone. With this view 

 I propose to give some account of an excursion made along a 

 portion of the eastern coast, in company with my friend Mr. 

 Bakewell, for the purpose of seeing the Suffolk Crag, and 

 collecting Crag-shells. 



VOL. VIII. — NO. I. D 



