Doubts and Facts concerning Linne. 39 



230. I have records of observations made on April 11 and 

 May 11, 1867, in which I expressly state that I could not detect 

 amy object on the surface of Linne. With Mr. Barnes' silvered 

 glass reflector {With) I very carefully examined Linne, on the 

 10th of June, 1867; but although both Mr. Barnes and Mr. 

 Browning saw a white nucleus, 1 was unable to detect it, and 

 saw nothing of a crater of the magnitude of 4"'0, which 1 think 

 I must have seen, had it been there. 



With regard to the variations in the extent of the whitish 

 cloud, I have observed phenomena of the same kind on the 

 Mare Crisium, and about seventy sets of measures of Diony sins, 

 yield the same result, though not to so great an extent as in 

 the case of Linne. 



OBSEEVATIONS ON LINNE. 



BY WM. HUGGINS, ESQ., F. E. S. 



In cc Monthly Notices" Mr. Huggins publishes a view of 

 Linne, as seen by him on May 11, at 8h. 45m. It represents 

 Linne as an oval white spot, and to the west of its centre 

 shows a white ring surrounding a black spot. Mr. Huggins 

 remarks, " At the time when the diagram was made, the 

 shallow, saucer-like form of Linne was not seen; but I have 

 detected it on other occasions. June 8, at 7h., when a great 

 part of the light reflected from our atmosphere was removed 

 by means of a Moor's prism, I observed a shadow within the 

 eastern margin of this shallow crater. When the diagram 

 was taken, on May 11, the " interior of the small crater was in 

 shadow, with the exception of a small part of it towards the 

 east. The margin of the small crater was much brighter on 

 the western side, and at this part appears to be more elevated 

 above the surface of Linne. , Under a very oblique illumina- 

 tion this high eastern wall appears as a small bright eminence, 

 and casts a somewhat pointed shadow.'" 



On the 9th July, at 9, Mr. Huggins measured Linne, 

 and found the 



Length of the bright spot 7"'85 



Breadth 6"'14 



Diameter of small crater ..... I"' 71 



The power employed was 500. 



On the 14th Feb., 1866, Mr. Huggins examined the spec- 

 trum of the light from Linne, but could detect no lines not 

 belonging to solar light. 



Mr. Huggins quotes Schroter's description of Linne, and 

 remarks that in Plate IX. of his " Selenotopographische 

 Fragmente," " the place occupied by Linne is marked by 



