220 Mr. Herschel on the 



foregoing part of this paper, is perfectly confiftent with h€t% 

 and feems to be confirmed and eflabUfhed by a feries of obfer- 

 vations. It will appear, that many hundreds of nebulae of the 

 firft and fecond forms are actually to be ittw in the heavens, 

 and their places will hereafter be pointed out. Many of the 

 thtid form will be defcribed, and inftances of the fourth re- 

 lated. A few of the cavities mentioned in the fifth will be 

 particularifed, though many more have already been obfcrved ; 

 fo that, upon the w^holc, I believe, it will be found, that the 

 foregoing theoretical view, with all its confequential appear- 

 ances, as feen by an eye inclofed in one of the nebulae, is no 

 other than a drawing from nature, wherein the features of the 

 original have been clofely copied ; and 1 hope the refemblance 

 will not be called a bad one, when it fliall be confidcred how" 

 very limited mufl: be the pencil of an inhabitant of fo fmall 

 and retired a portion of an Indefinite fyftem in attempting the 

 picture of fo unbounded an extent. 



But to proceed to particulars : I fhall begin by giving the 

 following table of gages that have been taken. In the firft 

 column is the right afcenfion, and in the fecond the north 

 polar diflance, both reduced to the time of Flamsteed's 

 Catalogue. In the third are the contents of the heavens, being 

 the refult of the gages. The fourth fhews from how many 

 fields of view the gages w^ere deduced, which have been ten or 

 more where the number of the ftars was not very confiderable ; 

 but, as it would have taken too much time, in high numbers, 

 to count fo many fields, the gages are generally fingle. Where 

 the ftars happened to be uncommonly crouded, no more than 

 half a field was counted, and even fometimes only a quadrant ; 

 but then it was always done with the precaution of fixing on 

 fome row of ftars that would point out the divifion of the field, 



fo 



