UK GARDENERS' CHRONICLE. 





epiphyte* in a germs which, a few years since, was »«• »« * f { , f the most elegant of its tribe. The heai;.J? k 



noAnown to contain one. This is not, perhaps, a JJ* £X ^jS.). the sfeciea of which, so are black and horny, the thorax is cream c2«S * 

 hitherto described, confine their attacks to plant, ^el^aje black^each^mth several rowToffc^ 



which the elytra are united together when thVS^ 





in system of botany, are 

 to the class Pentandrin, 



***** _J*5 ,, rr ,ni| mm atttDhvtes in damp | diseorered the Natural System, and proved by the fact 



raNVBSUB ■«*■«'■ — *yy j r | ^ ^.^ gometimea indiscriminately feeding on Mulleins 



I? 8 *" V*mm k» if ' plants were in truth closely 



' : ' 

 carta at Hammersmith, no other plant of 

 tan or Scrophularia being in the vicinity.^ 



. v; [ :..••. ; r -...:.-'■: .! ■•!' •!■■- [>•< il:.tr t.. nf „, tni ! < , mv . n; i g ,, :l ;?..■ ■.• j -t Mirfac- < ■:' tl;.- kavv^ 



... tO guide, h. ealthatM of this plant, which contented themselves with devouring 



■ tat In their ordinary appear- 



?V gweniTh^ro^r colour, and of the size' (when full 



• •• • ■• 



r^f»K» K»rV af inthe above woodcut. They are desti- 



'' " ". " ir " "' ,, .'' : . . '.vf !»•-•«, !-ut :ir- :.. wrt!..\^ al.le to move along 



" Wt *l *^hn iriinn «rnre •«. • 1 to 1 *"* 1 ''* fMt » nsin K U,eir J aW8 "* fore le § 8 to clin 8 to 



: : -. . : • ■•■ 



• late Dean HiaaraT, tnat tne n« nr « natulan ^ ffont of the body , mfter which they draw f orwar ds the 



aii'i ■! . :. ■' n.'.-.-s, ir:.y | ■' " '•-.' ' /" > I ;' : : | im 1 parr, retaining th- r ],• -i'i n !■} means of lar;,'.> 

 i natural localities onlv * .'.rcles on the under side of the abdominal 



>t he i augments of the body. The head is small, oblong, and 

 that black, and the first segment of the body is marked with 

 two black spots ; each of the following segments, as will 



on v. lop. .1 • in I When full grown these lame 

 1 so large as to . globular semi-transparent case 



• which has attracted the notice" of several of the best 



bat Ihtta | rl I 



ie Physique et 



leaves, observed that they \ 



ESSAY, THEORETICAL AND PRACTICAL,, 

 THE DISEASES OF PLANTS ^ ^ 

 "'th^RoTalUriv^ 



rangement of all the diseases of plants, gbRta! i 



i long series of yei 



knowledge shall have been attained of the phytiolo, 

 ^institution of the elementary parts of plants, a 



appy moment shall have arrived, it appears to meta* 

 11 those who have at heart the safe and rapid adna* 

 lent of the agrarian art, should carefully stndy tk 

 auses and symptoms of the diseases of vegetables, u< 

 sarch out such remedies as may be best applicable B 



said ( 



which Pliny speaks of as having been lost," we ki 

 that the diseases of plants are treated of, and tl 

 principal causes adverted to, in the treatise ■ De Nsl 

 Pueri," lib. iv. de morbis, attributed to Hippocn 

 and which, if not his, is at any rate of great antiquity! 

 But Theophrastus is the most ancient of those utfaa 

 whose writings are preserved to us, who trei 



his « History of Plants," speaking also of t 

 attack the Cerealia, in the end of his third book " D» 

 Causis Plantarum." He devotes nearly half of this werk 

 to the description of most of the ailments of vegefsbta, 



and he applies himself with great precision to ti 

 indications of all the remedies known to him. Tfc 

 writer may well be considered as the one who kid ti 

 foundation of vegetable pathology. Whoever has ttk« 

 the pains to examine the two works, will prcbsil 

 agree with me in the opinion that Theophrastus must W 

 placed at the head of writers on rural economy, altbcugk 



whose works are preserved to us. lie fu . 



the praises bestowed on him by Varro and Colnmeii, 



and have chiefly confined themselves to p 



Pliny the elder alone, in Book 



IgoddeMRu^ 



• i In 

 veil vtrs..-d in the Greek language may decidsa 



- ■ 



■ . 

 lulture, till the beginning of the eighteenth tWtJj 



, Huber, however, ascertained thewry*few who may perhaps 8 Kngled out fr«B *[ 

 ).a Delia Porta, w* 1 ^ "^ &, 

 aelieve is absorbed by the'pores of its ski; Is some observations of hi* * 



>ueve is absorbed by the pores 



--■•■'-. 

 (which is generally on the leaf or stem of the 



Mr< ' ■ 



for although it may, at first eX er ions and nf, 



body was inclosed 



« 7™ ^g raent? ' in Buch quan- which some person 

 first sight appears as though the ancients, that many 



respectively from cf coo] 



! also does Eysforth in his dissertation " D« ^M« * ^ ^ 



tly afterwards hardens and dries , ^Ab ut the middle of last een'u, 



. '.■ ;: -■ ■ . • ■ . . ■...,-■■■■. . 



• '.'.'v.'.'':' . ' ::; " : - "' • '" ! -= "v '■■■■' ■ . ' 



