C L A 



670 



C L A 



Obi. lur h manicre l.i plus simple d'examiner li lei 

 etoilr* fixr out une parallaxe, et de la determiner exacte- 

 roeni, 17:i'., p. S58. H. 42. 



Obs. ur le explications Cmeiienne et Newtonienne 

 de la refraction de la lumicre, 1739, p. 259. 



Rrcherchei ge lerales tur le calcul integral, 1739, p. 



1) la ipirale A'Arehimftle dccrite par un mouvement 

 pareil a eera qut donne la cyclo'i'de et de quelques autres 

 courbei de meroe genre, 1740, p. 1*8. 



Problcme physico mathcmatique, 1740, p. 23 1. 



Obs. fur I 'integration ou la construction des equations 

 diffiervntwlles du premier orJre, 174f), p. 293. 

 .cn de Gc'jmetrie, I~41. H. 96'. 



Obs. su- quelques principrs qui donnent la solution 

 d'un grand uorabre de problcmes de dynamique, 17*2, 

 p. 1. H. 125. 



Traite complet de la figure de la Terre, 1742. H. 

 86. 



De 1'Orbite de la Lune dans le Systeme de M. New- 

 ton, 1743, p. 17. H. 123. 



Du Sy stcme du M >nde dans les principes de la Gra- 

 vitation universelle, 1745, p. . 



Advfrlissement de M. Cla-raut, au sujet des Memoires 

 qu\l a donnes en 1747 et 1748, tur le systeme du Monde 

 dans les principes dr 1' Attraction, 1745, p. 577. 



R6ponse aux Reflexions de M. Button, sur la loi de 

 1' Attraction, et sur le movement des Apsides, 1745, p. 



Reponse a la Replique de M. de Buffon, 1745, p. 578. 



Reponse au nouveau Memoire de M. de Buffoii, 1745, 

 p. 583. 



Elemens d'Algebre, 1746. H. 87. 



De 1'Abcrration de la Lumiere des Planetes, des Co- 

 metes, et des Satellites, 1746, p. 539. H. 101. 



De 1'Orbite de la Lune, en ne nc-gligeant pas les 

 quarrcs des quantities de mcrae ordre que les forces per- 

 turbatrices, 1748, p. 421. 



Tables de la Lune, calculees suivant la Theorie de la 

 Gravitation universelle, 1752. H. 111. 



Construction des Tables de la Parallax horizontal de la 

 Lune, qui suivent de la Theorie que J'ai donnce des 

 mouvements de cette Planete ; avec quelques Reflexions 

 ur ses autres Siemens calculus dans les mcmc Theorie, 

 1752, p. 142. H. 115. 



Construction des Tables du mouvement horaire de la 

 Lune, 1752, p. 593. H. 115. 



Mem. sur 1'Orbite apparente du Solcil autour de la 

 Terre, en ayant egard aux perturbations produites par 

 les actions de la Lune et des Planetes principals, 1754, 

 p. 321. H. 120. 



Mem. sur les Moyensde perfectionner les Lunettes d'ap- 

 proche par 1'usage d'objectifs composes de plusieurs ma 

 ticres differcmment refringentes, 1756, p. 380. H. 112. 



Second Memoire sur les Moyens de pertectionner les 

 Lunettes d'approche, par 1'usage d'objectifs compo.es 

 de plusieurs matieres differemmept refrmgentes, 1757> p. 

 584. H. 153. 



Mem. sur la Comcte de 1759 dans lequel on donne 

 le* periodes quil cut le plus a propos d'employer en faisant 

 usage des Observation.- faites sur cette C: mete dans les 

 quatrr derniers apparitions, 1759, p. 115. H. 160. 



Theorie du mouvemen: des Cometes, dans *a qm-lle on 

 a egard a faction qutllcs eprouvent de la part des Pla- 

 netes, arec ('application de cette Theorie a la Comete des 

 annees, 1531, UJ07, 1682, and 1759 ; 1760. H. 128. 



Nouvelle solution di qudques problcmes sur la man- 

 auvre don VaifS' aiix q ^o ;rouvent dans le volume de 

 l'Acdcmie de 17541760, p. 171. H. 141. 



Clare. 



Troisieme M6moirc sur les moyens de perfectionner 

 les Lunettes d'approche par le moyen d'objectifs com. 

 posrs de plusieurs matieres diflcremmcnt itfringentes, 

 iTii.', p. 578. H. 160. See ASTRONOMY, vol. ii. pp. 

 6ol, 674 ; CAPILLARY ATTRACTION, and OPTICS, (o) 



CLA1R OBSCLIIE. See PAINTING. 



CLARE, a county of Ireland, in the province of 

 Munster, bounded to the south and cast by the Shannon, 

 which divides it from the counties of Tippcrary, Limer- 

 ick, and Kerry ; on the west by the Atlantic ocean ; and 

 on the north by the county of Galway. It extends from 

 north to south 33 English miles, from east to west 6ti, 

 and its superficial measurement is about 1195 square 

 miles. The sea-coast by which this county is bordered, 

 consists of a chain of basaltic rocks. Towards the cen- 

 tre of it is an arm of the sea, or rather of the Shannon, 

 known by the name of the Fergus river. It is remark- 

 ably bare of wood, and abounds so much with limestone, 

 that whole tracts are entirely beds of it, the surface even 

 having the appearance of a mass of stone. 



The soil in this county is of various quality, some be- Suit, 

 ing of the nature of fattening and meadow ground, other 

 parts consisting of light limestone pasture ht for rearing 

 sheep and young cattle, and there is a great deal of ara- 

 ble land ; likewise extensive bogs, and some mountain 

 land. Mr Young states that the Corcasscs, a tract of 

 ground consisting of about 20,000 acres, which extend 

 along the Fergus and the Shannon, are peculiarly adapted 

 to the fattening of bullocks, and that at the time he tra- 

 velled there, 4000 were annually fattened on them. At 

 present also, the store-cattle of Clare are more numerous 

 than in any of the adjoining counties. Mr Young de- 

 scribes the soil of the Corcasses as cither a rich black 

 loam, or a deep rich blue clay. The higher lands are chiefly 

 limestone, or limestone gravel. The bogs in the county 

 afford a valuable supply of fuel. Those particularly near 

 the Shannon yield a handsome return to the proprietors, 

 by furnishing this article for the Limerick market. The 

 worst grounds in the county are the eastern mountains, 

 the peninsula north of the Shannon, and the barony of 

 Burren. Even this last, however, by the luxuriant pas- 

 turage interspersed among the seemingly barren hills, af- 

 fords support to great numbers of cattle and sheep ; and 

 the rocks themselvc* are limestone. The rent of the 

 green land, without including the Corcasses, has been 

 averaged at a guinea and a half per acre. The latter are 

 let so high as from 3 to 5 guineas per acre. 



The kind of grain chiefly cultivated in the county of Agricul 

 Clare, and indeed in the whole of the surrounding dis- tBrc> 

 trict, is oats ; and the establishment in this quarter of 

 corn-buyers, who ship that grain for Scotland, has indu- 

 ced the farmers to sow with it many acres in these parts, 

 which would otherwise have been covered only with sour 

 grass. Indeed a large portion of the tillage of this coun- 

 ty, especially that on the sides of mountains, or amongst 

 rocks, is performed by the spade, the unevenness of the 

 surface, as well as often the circumstances of the cultivator, 

 not admitting of the use of a plough and horses. Rape is 

 sown here in considerable quantity on the mountain or bog- 

 gy grounds. Some of the seed which is the produce, is 

 pressed into oil at mills near Killaloe, and the rape cakei 

 are sent to England for manure. For the most part, 

 however, the rape need is sent thither in its original state, 

 and it is there pressed, for the use of the woollen manu- 

 facturers in Yorkshire. Beans were formerly grown here 

 in large quantities, but since they have ceased to be used 

 for bread by the peasantry, the cultivation of thim hat 

 been laid aside. Fi.ix is sown, but not extensively, for 

 home consumption. In the preparation of the ground 



