LIST OF plates. 
Miscellanies XII. in the middle of Sheet E e. 
XIII. at the end of Sheet M m. 
Observatory, opposite the article Obsidian. 
Optics I. and II. at the end of the article Optics. 
Organ I. and II. at the end of Sheet E. 
Oryctology I. in the middle of Sheet F. 
'■ II. at the end of Sheet F. 
Paper mill, at the end of the article Paper. 
Parabola, in the middle of Sheet I. 
PentAgraph, at the end of Sheet L. 
Perambulator, second leaf of Sheet M. 
Perspective, at the end of the article Perspective. 
Planetarium, in the middle of Sheet C c. 
Pneumatics, opposite the article Pneumora. 
Presses, second leaf in H h. 
Reflecting circle, opposite the article Reformation. 
Rolling mill, opposite the article Roman Catholics. 
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VOL. VI. 
Amphibia II. at the end of Sheet B b. 
Aves XIII. opposite the article Sterna. 
XIV. at the end of Sheet L 1. 
Entomology IV. in the middle of Sheet H h. 
Loom, opposite the article Weaving. 
Mammalia XIX. end of Sheet L. 
XX. end of Sheet Z. 
XXI. end of Sheet L 1. 
Miscellanies XIV. in the middle of Sheet A a. 
XV. opposite the article Trinomial. 
XVI. at the end'of the article Writing. 
Pisces VI. in the middle of the Last Sheet. 
Sawmill, opposite the article Saxifuaga. 
Scotograph, opposite the article Scribing. 
Short hand I. and II. at the end of the article Short hand. 
Steam engine I. and 11. opposite the article Steatite. 
Watch work, in the middle of Sheet M m. 
Wind mill, at the end of Sheet O o. 
