WITH NOTES. 389 



\_Seals abundantly-significant^ Under this title 

 the present article is referred to in the u Index,&quot; given 

 by the Marquis, at the end of the first edition of his 

 a Century,&quot; while the articles themselves are only dis 

 tinguished by consecutive numerals. Therefore, with 

 out deranging the original form of the u Century,&quot; 

 the designation of the several articles will appear 

 throughout, as above, at the head of each comment. 



The author, never having met with any attempt to 

 elucidate the mechanical arrangement here suggested, 

 communicated a plan that occurred to him in 1829, 

 soon after reading the foregoing, which was as follows: 

 A Cipher Seal. Amidst the variety of inventions 

 for giving security to property, few improvements 

 have been made in seals or signets. I shall proceed 

 to describe a cipher seal, which, though not, perhaps, 

 so &quot;abundantly significant&quot; as those described by 

 the Marquis of Worcester, might, nevertheless, be 

 applied to very important uses, inasmuch as the face 

 of the seal may be varied at pleasure. 



Fig. 1. A, the seal handle ; B, 

 mJI the seal made moveable on the 



pivots at c c. 



Fig. 2. Ts a section of the 

 seal. It consists of two metal 

 plates, B B, and D D, having a 

 c number of corresponding holes 

 ipoooQQooooojl drilled through them, as at a a a a, 

 HB~ and b b b 5, into which the ends 



2 B | JHMhJmm tl n f sma U rollers, ab,ab, are made 



to fit and turn exactly. When 



all the holes are supplied with rollers, the plates, B B, 

 D D, are retained at a proper distance by a metal rim, 

 soldered to the edges of the plates. The ends of the 

 rollers being thus exposed, and ground level with the 



QOQOOOQQQOQ I 



