^CREGATA, an order of the syiigenesioiis class of plants, wliei^ 

 scvorel florets are inclosed in a common calyx, and each fumishcd 

 with its proper calyx. 

 SERRATE, cut or notched like a saw ; plaie 4^ fig. 31. ^ 

 SESQUIALTERAL, having a small abortive floret accompanying the 

 large one. In cntomoly it means occupying a third part of the wing, 

 or inclndins; a smaller band op spot within a larger one. 

 SESQUITERTIAL, occujyying the fonrth part. 

 SESSILE, connected immcdir.tfly with the part from vvliicli it originates^ 



without the intervention of support. 

 SETACEOUS, bristJe-shaped. 

 SETARIOUS, applied to the antennae of inse6ts^ it means, terminating 



in a simple naked bristle. 

 SHIELD, the saucer-like fru<5>lfication of lichens : The coloured spot 

 on the wings of some birds of the duck kind : The scutgl of inscds<^ 

 SILICLE, a 2-valved seed-vessel, nearly as wide as long^ with the 



seeds fixed to both sutures, but without partition. 

 SILIQUE, a pod or 2-valved seed-vessel, with the seeds fixed to both su-. 

 tiLses, having a membranous partition running down its m hole lengths 

 SINUATE, cut into deep sinuses ; plate 4, fig. 25. 

 SFADIX, the receptacle of such flowers as are produced from a spathc^ 



or sheath : ^j/tv/'c 6, fig. 6, b, 

 SPATHE, the calyx of a spadix, opening longitudinally like a sheath t 



plate 6, fig. 6, a. 

 SPATULATE, rounded and broad at the top and becoming narrower 

 at the base, like a spatula or battledore : jdate G, fig. 39. 

 , , SPECIES, the division of a family or genus, containing such as agrees 

 with it in generic chaia»5ter. 

 SPECULAR, exhibiting obje(^ls distinctly through it, as a piece of glass 



or talc. 

 SPHACELATE, dead and as if burnt at the edges. 



SPIKE, that kind of niflorescence where the flowers are sessile or 

 ranged alternately along a common receptacle or stalk : plaicl^ f. 1» 

 SPIKELET, a partial or lesser spike. 

 SPINESCEN'l', becoming hard and tiiorn-like. 



SPIRACLES, the apertures in animals through which they breathe* 

 vSPIRE, the whorls of sin2;le-valved shells. 

 SPUMESCENT, frothing up when burnt. 

 SPUR, the sharp appendage on the heel of some birds : Birdsy fig. 6. 



The horn-like nectary of some flowers. 

 SPURIOUS AVINGS, small secondary wings at the end of the joint of 

 the wings in birds, generally consisting of 3 or 5 short feathers : 

 llirds^ fig. 1, «. 

 SQUARROSE, consisting of scales spreading every way, or divided 



into pieces standing upright and not parallel with the plane. 

 STAMEN, the male organ of frudtification in plants: plate Q^ fig. I0« 

 STELLATE, radiating like the. spokes of a wheel. 

 STEMMATA, the 2 tn: 3 simple eyes placed ou the crown of the head 

 of some insects. 



