Dr. Herschel’s Observations to investigate 
272 
Openings have a Tendency to run into each other. 
Dec. 25, 1 799. The large opening of December 23, and the 
small one near it, are now nearly run into each other. 
Jan. 4, 1801. The two largest openings of Jan. 2, are nearly 
joined into one. 
Jan. 6 , 1801. The largest of the preceding openings, of a set 
observed Jan. 4, has drawn together all the small ones, and is 
increased in dimensions. 
Jan. 29, 1801. 2 h 10'. A longish opening, observed at i2 h , is 
increased by the addition of two projections. With more atten- 
tion, however, I perceive that these projections are united to 
each other, but separated from the longish opening, by a narrow 
luminous bridge, or compressed row of luminous clouds. 
Jan. 30, 1801. The two united projections of yesterday are 
now joined to the longish opening. 
New Openings break out near other Openings. 
Dec. 23, 1799. There is a small opening near the large one 
observed yesterday, which then was not visible. 
Jan. 21, 1800. The preceding of two openings observed before, 
has now two other small ones near it. 
Probable Cause of Openings. 
Jan. 18, 1801. Between two clusters of openings, near each 
other, there are some, as I suspect, incipient openings : they 
resemble coarse pores of indentations. 
Jan. 19, 1801. The incipient openings, between the clusters 
of yesterday’s observation, are completely turned into consider- 
able openings. It seems as if an elastic, but not luminous gas, 
