BIBLIOGKAPTIY OF HERSCHEL'iS WRITINGS. 577 



Herschel, W.: Synopsis of tiu: Wkitixgs of— Coutinnetl. 

 A. D. Vol. r. 



1800 90 533-534 Method of dc^teimiuation. 



534-535 Table VIII. Containing the relative scattering power of thirty- 



tliree bodies. 

 535-538 Explanation of the ]'lates. 



1801 91 '.205 Observationii tendhuj to investigate tl\e Nature of the Sun in order to find 



the Causes or Symptoms of its variable Emission of Light and Jleat; 

 with Eemarks on the Use that may possibly be drawn from Solar Obser- 

 vations. By William IIeksciiel, LL. D., F. R S. Read April 16, 

 1801. 



265-266 Reference to IIersciiel's view, given on a former occasion, that 

 the sun is a maguiticent habitable globe ; declaration that these more 

 recent observations support that view ; and a statement as to the 

 impoi-tance of solar observations in their l)earing upon the climate, 

 together with an opinion that such observations will enable us to 

 predict the character of a season. 



267-268 Definitions of the terms, openings, shallows, ridges, nodules, corru- 

 gations, indentations, and 2)ores. 



269 Explanation of the form of the paper and the reasons for it. 



270 Of openings. Openings arc Placi's where the luminous Clouds of the Sun 



are removed. 

 [Foot-note.] For a geometrical proof of the depression of openings 

 a reference to a paper by Alexander Wilson, rhil. Trans., vol. 

 64. 



271 Large Openings have generally Shallows about them. Many Openings are 



without Shallows. Small Openings are generally without Shallows. 

 Openings have generally Ridges and Nodules about them. 



272 Openings have a Tendency to run into each other. New Openings break out 



near other Openings. Probable Cause of Openings. 



273 Direction and Operation of the disturbing Cause. 



274 Maxima of Openings. 



275 TAe7-e is some Difference in the colour of Openings. Openings divide tvheii 



they are decaying. 



276 Decaying Openings sometimes increase again. When Openings are divided 



they grow less and vanish. Decayed Openings sometimes become large 

 Indentations. 



277 Decaying Openings turn sometimes into Pores. When Openings are van- 



ished, they leave Disturbance behind. 



278 Apparent View into the Openings, under luminous Ilidgcs and Shallows. 

 Depth of the Openings indicuted by their Darkness. 



279 Distance between the Shallows and solar Surface, indicated by the free 



Motion of low Clouds. 



280 Of Shallows. Shallows are depressed below the general Surface of the 



Sun; and are Places ivhere the luminous solar Clouds of the upper Re- 

 gions are removed. The Thickness of the Shallows is visible. 



231 Sometimes there are Shalloivs without Openings in them. Incipient Shallows 

 come from the Openings, or branch out from Shallows already formed, 

 and go forwards. ProbaUe Cause of Shallows. 



283 Shalloivs have no Corrugations, but are tufted. Decay of Shalloics. 



283 Of Ridges. Pidgon are Elevations above the general Surface of the lu- 



minous Clouds of the Sun. 



284 Length of a Pddgc. Pddges generally accompany Openings. Pddgea are 



also often in Plates tvhere there are no Openings. 

 S. Mis. 31 37 



