216 Great Bandana Gallery ^ Glasgow. 



of printers' ink, on the paper pasted on another plate. The im- 

 pression is taken in the hydrostatic press. Each pair of plates 

 constitutes a set, which may be put into the presses, and re- 

 moved at pleasure. 



Plate VI. is an elevation of one press ; A, the top, or entabla- 

 ture ; BB, cheeks of ditto, or pillars ; C, upper block for fastening 

 upper pattern to ; D, lower or moveable block ; E, the cylinder ; 

 F, the sole or base ; G, the water trough for the discharged 

 cloth to fall into ; H, cistern or liquor-metre ; dd, glass tubes 

 for indicating the quantity of liquor in the cistern; ee, glass 

 stop-cocks for admitting the liquor into the cistern ; f f, stop- 

 cocks for admitting water ; gg, the pattern-plates ; nn, screws 

 for setting the patterns parallel to each other ; mm, snuffs per- 

 forated with a half inch drill. The lower iron frame has corre- 

 sponding pins, which suit these perforations, so that the patterns 

 are guided into exact correspondence with each other ; hh, rol- 

 lers which receive and pull through the discharged cloth, from 

 which it falls into the water-box ; k, stop-cock for filling the 

 trough with water ; i i i, waste tubes for water and liquor. 

 Glasgow, May 30th, 1823. 



Art. IV. Lamarck's Genera of Shells. 



[Continued from Vol, XV. p. 52.] 



CLASS XII. 



MOLLUSCA*. 



Animal soft, not articulated, having a head, which forms 



a fleshy eminence on the fore part of the body, more or less 



prominent, often of a round shape and generally furnished with 



eyes, and sometimes, with from two to four, or at most, six 



tentacula ; sometimes surmounted by arms on the summit, 



disposed in the form of a crown. Mouth, whether short or 



* MoUuscus soft ; an eld word, nearly obsolete^ derived from the Greek 



