THE PREFACE. 



Characler in Botanical Learning , is nsjell knoijon to the 

 Tuhltck. We carefully compared allmy Specimens \ with 

 that large and well-digeliedCoUeciion of dry ed Plants, which 

 Dr. W. Sherard bequeathed to the Phyfick Garden of the 

 Univerjity of Oxford j where all curious Perfons have an 

 eafy ^ccefs, through the great /Iff ability and communica- 

 tive Temper of that worthy Gentleman, to whofe Care they 

 are entrujied. 



But lesl any Mifiakes fhould have been committed in the 

 Defer iptions of Thefe or of the marine Vegetables, the ^^u- 

 thor has depofited //?^ Originals in the Sherardian Colleclion. 

 Recourfe ynay be had likewife to the other Curiofities, taken 

 Notice of in thefe Obfervations {fuch as Foffils, Medals, 

 &'c.) in the Library of Queen's College ; where they may 

 he confulted by the inquifitive Reader. 



The feveral Differtations that are occafioyially inter- 

 fperfed throughout this Work will not , I pre fume , he 

 thought Digreffions, as they flow naturally from the Sub- 

 jeB. Neither need any apology be made for the Coll ection 

 of Papers, that are infer ted after ?/)^ Obfervations ; fince 

 they are all of them either fo many Branches themf elves of 

 the Natural Hifiory, or elfeferve to illuHrate Jome Part or 

 other of this Work. 



K^Excerpta particularly from antient j^uthors, will 

 certainly plead for themfelves, as they give the Reader, in 

 one View, all that was known to the ^ntients , of thofe 

 Parts of Bar bary, which I have here undertaken to defcribe. 

 They are constantly appealed to, in the marginal Notes of the 



I The following Plants, having been overlooked in placing r/;e Phytographia alphabetic allj, are 

 to be inferted according to their refpeclive Numbers : viz. after no. 78. infert 78". &c. 



78". Borrago floribus albis, foliis longis, folio fubtus, ihcano. I. R. H.ijo. 

 anguftis. 4<59''. Periploca foliis anguftis, confertis, 



ijS", Clymenum pufillum, anguftifolium, floribus ex viridi flavefcentibus. Folia parva, 



vexillo rubro, alis flavefcentibus. rigida, obttifa, qus.dam actitiora, ad genicuU 



164. Colocynthis pumila &c. Cucumis pltirma nafcuntur. Flores pedictdis brevibns 



Africanus echinatus minor: Hyftrix vegeta- harent e petalis anguflis compofiti. 

 bilisvulgoHerm. Par. B. 133. Defer. Cucumis JjS". Sinapiftrum triphyllum breviore & 



echinatus, Colocynthidis folio Ibid. Ic. hirlutiori folio. Hac Species etiam , injlat 



221". Eruca fylveftris minor lutea, Burfae n. yj7 & 5^j8, vifcofa ejl, 

 Paftoris folio, Italica, Bar. Ic. 1016. Defer. 621". Virga aurea major, foliis glutinofis 



422. & graveolcntibus. I. R. H. 414. Madramam 



313*. HelianthemunaHifpanicum, Origani Arabum. vid.Oi/. p.2(S(J. 



d Geo- 



xiii 



