K E T 



[384] 



B H 



choidal. Specific gravity 1-13. 

 It consists of resin 55, asphaltum 

 41, earthy matter 3. 



BETEOELEC'TED. (from retro, back, 

 au&jlecto, to bend, Lat.) Bent in 

 different directions, usually in a 

 distorted manner. 



BETEOMI'NGENTS. In zoology, a class 

 of animals, whose characteristic is, 

 that they void their urine back- 

 wards. 



BETTJ'SE. (retusus, Lat. blunted.) 



1. In conchology, a shell ending in 

 an obtuse sinus is termed a retme 

 shell ; bluntly notched. 



2. In botany, leaves are called 

 retuse, when ending in a broad 

 shallow notch, or sinus. 



3. In entomology, when the ter- 

 minal margin has an obtuse im- 

 pression. 



BEVE'ESED. (reversus> Lat.) Turned 

 upside down ; turned side for side. 

 1. In conchology, a reversed shell 

 is one, the volutions of which are 

 the reverse way of the common 

 corkscrew. 



*2. In botany, when the upper lip > 

 of the corolla is larger and more 

 expanded than the lower. 



BE' VOLUTE. (revolutus, Lat.) In 

 botany, applied to leaves, when 

 the margins are rolled backwards 

 towards the under surface. 



BE'YGATE STONE. } (So named 



BE'YGATE FIEE-STONE. j from ha- 

 ving been formerly quarried almost 

 exclusively at, or in the neighbour- 

 hood of, Beygate, in Surrey. Web- 

 ster says that Beygate stone is 

 identical with the green sandstone. 

 The Reygate stone is situated 

 below the chalk marl and above 

 the ferruginous sand. It is now 

 procured principally at Merstham, 

 three miles from Reygate. 



BHACHEOSATJ'ETJS. A fossil saurian of 

 the lias and oolite, 



BHINO'CEEOS. (ptvoicepws, Gr. from 

 plv, a nose, and Kepa<s, a horn.) A 

 genus of thick-skinned mammalia 

 included by Cuvier in the family 



Pachydermata Ordinaria. The 

 rhinoceros is found, at the present 

 day, in India, Java, Africa, and 

 Sumatra. It is a large animal, 

 having three toes, but the feet not 

 cloven. The bones of the nose 

 support a solid horn in two species 

 of this genus ; but the other 

 species possess two horns. 



Fossil remains of the rhinoceros 

 are found in Siberia and Germany. 

 The entire carcass of a fossil rhi- 

 noceros was discovered, in frozen 

 sand, on the banks of the Wilaji, 

 in Siberia. Bones and teeth of the 

 rhinoceros are found in this coun- 

 try in superficial gravel and loam. 



BHIPI'PTEEA. A new order of insects, 

 established by Kirby under the 

 name of Strepsiptera (twisted 

 wings), named Bhipiptera by La- 

 treille, includes only two genera, 

 namely Stylops and Xenos. These 

 insects are remarkable for their 

 anomalous form, and the irregu- 

 larity of their habits. The tegmina 

 are fixed at the base of the anterior 

 legs ; they are both long and 

 narrow, and appear to be incapable 

 of protecting the wings. The 

 wings are large, membranous, di- 

 vided by longitudinal and radiating 

 nervures, and fold longitudinally, 

 after the manner of a fan. 



BHIZO'MA. (pi^wfia, a root, Gr.) A 

 species of creeping stem which 

 grows under-ground. 



BHIZO'PODES. A class of animals of 

 lower degree than the Badiata, 

 possessing a power of locomotion 

 by means of minute tentacular 

 filaments ; comprising the animals 

 whichconstruct the miliola, and some 

 microscopic foraminiferous shells. 



BHO'DLUM. A metal of a white colour, 

 having a metallic lustre, brittle 

 and hard: specific gravity 11. 

 Discovered by Wollaston in 1803, 

 in the native ore of platinum. 



BHODOCBINI'TES. (from podov, a rose, 

 and Kpivov, a lily, Gr. So named 

 from the rose-like figure of its ali- 



