EXPLANATION of TERMS 



USED IN THE VARIOUS DEPARTMENTS OF 



NATURAL HISTORY. 



^\ DDREVIATED, shorter tlian some correspondent part. 

 Ai^DOMliN, the part of animals containing the viscera. In entomology 



it is placed immediately behind the thorax, and consists of aiinular 



segment^ : [luacls^ Jig. S. i. 

 .ABDO^IINAL, the fourth order of fishes, comprehending thoscf^ 



having the petStoral fins placed before the ventral. jpV.vAey, Jig. 5. 

 ABRLFT, a pinnate leaf is termed abrupt, or abrupt'y pinnate, Mhea 



it hqs neither an odd leaf or tendril at the end : plate 5, Jig. 7. 



In icthyolpsy it is applied to the lateral line, when divided into 



two or more parts not contiguons. 

 ACCIPITRES, the first order of birds, having an angular tooth-Iik© 



projesStion on the upper mandible : Birds^ fig, 3, 

 ACEROSE, linear and permanent : plafe 4, Jrg, 7. 

 ACICULAR, sharp-pointed, like a small needle. 

 ACINACIF6r.M, shaped like a sabre. 

 ACULEATE, furnished with, or ending in prickles. 

 ADNAFE, adhering or growing together, adjoining. 

 ALG/E, the fourth order of the cryptogamous class of plants, con-. 



sisting of frondose herbs with the seeds imbedded, and not containe4 



in a capsule. 

 AMRL'LAiORY, formed for walking, applied to the feet of birds, 



where the toes are placed three before and one behind : Birds, fig. 6- 

 AMENT, a catkin, or row of chalFy scales, ranged along a slender 



receptacle : plate 7, Jig. 7. 

 AMORPHOUS, of no determinate shape or figure when broken, 

 AMPHIBIA, the third class of animals, comprising those which from 



their peculiar strudture, have the power of suspending respiratioa 



at pleasure, and can live both in water and on land. 

 ANAL, the tin, which in fishes, is placed between the vent and tail, 



and expands perpendicularly : Fishes., Jig. 1, c. 

 ANASTOMOSING, inosculatingor running into each other, like veins, 

 ANCIPITAL . having two opposite edges or angles. 

 , ANGIOSPERMIA,' the second order of plants in the class didynamia, 



having the seeds contained in a vessel. 

 ANNULATE, formed or divided into distindl rings, or marked with 



ditierently coloured annulalions. 

 ANSERES, the third order of birds having the bill broad at the tip, 



and covered with a soft skin : Birds, Jig. 4. 

 ANTENNJ5, the horn-like processes, proje6ling frora the head of 



inse(5ts : lns:e6is,Jig. 8, 9 ; c. 

 ANTHERA, the part of the stamen placed on the top of the filament^ 



and containing t\\Q pollen or dust of impregnation : plaU 6^ 



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