GLOSSARY 



OF SCIENTIFIC TERMS USED IN THE WORK. 



AOASTA, one of the Oceanides. 



ACEPHALA, mollusca wanting the 

 head, as the scallop, &c. 



ACERA, without a horn. 



AcHATiNA,a genus of univalve shells. 



ACICULAR, needle-like, sharp-pointed. 



ACROLEPIS, fossil fish with crested 

 scales. 



AEROLITES, mineral masses that fall 

 from the atmosphere. 



ALASMIDONTA, without a lateral tooth. 



ALG.E, a division of cryptogamic 

 plants, including the sea-weeds. 



ALLUVIUM, materials transported 

 and deposited by the action of 

 water. 



ALUMINOUS, clayey. 



ALUMINUM, metallic base of clay. 



AMMONITES, Ammon, a name of 

 Jupiter. 



AMMONOCERATITES, the horn of Am- 

 mon. 



AMORPHOUS, shapeless, destitute of 

 regular form. 



AMPHIDESMA, ligament, external and 

 internal ; a genus of shells. 



AMPHITRITE, one of the Nereids. 



AMPULLARIA, lot., ampulla, a wide- 

 mouthed bottle. 



AMYGDALOID, that cellular structure 

 of the trap-rocks, in which mineral 

 substances are embedded. 



ANALOGUE, a similar representative 

 animal or vegetable; a recent 



shell of the same species as a fossil 

 shell is an analogue of the latter. 



ANASTOMA, mouth looking upwards. 



ANASTOMOSING, running into each 

 other. 



ANATIPERA, producing ducks. 



ANATINA, anas, gr., a duck. 



ANCHYLOSED, joints of bones, im- 

 moveably united. 



ANCILLARIA, from lot., ancilla, a 

 damsel. 



ANCYLUS, lat., ancile, a sacred shield. 



ANGLE : the following observations 

 may be advantageously borne in 

 mind : A right angle is formed 

 by the insertion of two lines which 

 are perpendicular to each other, 

 and which form an angle of 90 

 degrees, or the fourth part of a 

 circle ; the frames which contain 

 a pane of glass are an example : 

 An acute angle is one which is 

 less than 90 degrees; an obtuse 

 angle, one which is more : an 

 oblique angle is one which is not 

 90 degrees, and may be either 

 more or less, either obtuse or acute. 



ANNELIDES, animals having an ex- 

 ternal integument formed of rings, 

 as the worm. 



ANODONTA, having no teeth. 



ANOMIA, without law, anomalous. 



ANTENNA, the projecting feelers of 

 insects. > 



