Mr. Charles Bailey, F.L.S., read a paper entitled, 

 "Notes on the Structure, the occurrence in Lancashire, and 

 the Source of Origin, of Naias graminea Del., var. Delilei 

 Magnus. 



General Meeting, October 21st, 1884. 



Professor W. C. Williamson, F.E.S., President in tlie 



Chair. 

 Mr. Edwaed Donner, of Manchester, Merchant, was 

 elected an Ordinary Member of the Society. 



Ordinary Meeting, October 21st, 1884. 



Professor W. C. Williamson, F.KS., President, in the 



Chair. 



" Note on the Visibility of the Moon during Total Lunar 

 Eclipses," by Joseph Baxendell, F.R.S., F.R.A.S. 



It has been generally supposed by astronomers since the 

 time of Kepler that the visibility of the moon during total 

 lunar eclipses is due to light refracted by the earth's 

 atmosphere; but in considering the phenomena of the late 

 eclipse, and endeavouring to estimate the amount of light 

 which could be bent by the atmosphere of the earth into 

 its shadow, I was led to doubt whether this light was 

 sufficient to illuminate the eclipsed moon to the extent 

 observed in many total eclipses ; and this view appeared to 

 me to be supported by the faintness of the illumination of 

 the dark part of the moon by the reflected light from the 

 whole, or nearly the whole, of the disk of the earth a little 



