S. P. Langley— Minute structure of the Solar Photosphere. 91 
increased and the mean distance between their centers dimin- 
ished.* 
In moments of rarest definition I have resolved these ‘ rice- 
grains” into minuter components, sensibly round, which are 
seea singly as points of light, and whose aggregation produces 
the ‘‘rice-grain” structure. These minutest bodies, which I 
will call granules,+ it will appear subsequently can hardly equal 
0°33 
* There is no antecedent improbability in the idea that they are more numerous 
in certain latitudes than in others, but if there be a difference pic 
+ As this word is already int ith another i tion should be 
Given to the restri d definite significance which is here assigned to 
$I have led from sev 10) lent 0 ations to estimate that the 
Ser axes of the rity of cases nearly el to the solar 
equator, and this, associated with the granules, makes 
© same time, I wish to await more of the rare ities for 
measurements before announcing this as a fact not open to question. 
