The Great Nebula in Orion. 



59 



A few favourable nights have shown me details which I 

 know not how to reconcile with any designs which I have had 

 an opportunity of examining, and there is reason to suppose 

 that a similar examination in other hands would lead to 

 analogous, though, very possibly, not identical conclusions. 

 The feebler portions of the nebulosity are of course out of the 

 reach of any but the most light-grasping instruments ; but 



108 120 



113 



[The figures placed above and beneath the diagram are the numbers by which 

 the stars are designated, in the order of their Eight Ascension, by Sir John Hers- 

 chel, in his Observations at the Cape of G-ood Hope, and which have since been 

 generally adopted. They are not introduced in the diagram for the sake of clear- 

 ness, but they may easily be referred to their places by running a vertical line 

 from each star to its corresponding number, above or below. The diagram is to 

 be considered as bisected from right to left, just beneath the trapezium, the 

 numbers at the top referring to the stars lying above the group, and vice versa.'] 



