3o8 bouguer's voyage to peru. 



from the point on which the ray fell to the plumb-line ; and afterwards refolved the 

 triangle by a calculation, treating it, as it was effectively, as a redangle. 



Thefe obfervations, frequently repeated, corrected one in the eftimation I made of 

 the length of diftances. The badnefs of the road in the Cordelier, the paffage of the 

 ftreams and rivers we frequently meet with when we leave it, and when we coaft the 

 bafe of the chain of mountains, will throw us into errors, howfoever experienced we 

 may be. The reiterated obfervations of the latitude came to my aid, which, in com- 

 bining with the direftions I obtain with the load-ftone, I attained to determinations 

 fufficiently exa£t for all the ordinary purpofes of geography. We follow the fhore of 

 the Magdalene almoft all the way from Plata to Honda, and mofl generally its wejftern 

 fide. Honda is a very cheerful little town, and the firft port we meet with up the 

 river, which is neverthelefs navigable confiderably above. I had no means during my 

 navigation, of availing myfelf of the heights of the mountains ; but I meafured from 

 time to time the rapidity of the run of the river, and continually noticed its direction. 

 It took me up fourteen days to defcend, fubmitting myfelf to the force of its current, 

 and every night I flept on fhore. The time I remained at Mompox, which is a very 

 pretty port about feven leagues above the confluence of the Magdalene with the Cauca, 

 is not comprehended in thefe fourteen days. I annex here under the form of notes, 

 the refult of all my afcertainments, which were confirmed, when on the 30th of Sep- 

 tember 1743 I reached the lower part of the river in the vicinage of Carthagena 

 and Saint Martha, the fituation of which places with regard to Quito, I was ac- 

 quainted with *. 



Eaftern 

 „ ,, _ I • I /-< Northern longitude 



^ rLACESJituatca m the Cordelier. latitude. withr£latiort 



to Quito. 

 D. M. D. M. 



Combal, a town fituated at the foot of a volcano always covered with fnow, - - o 49 o 42 



Ypiales - -045054 



Pafto, a final! town at the foot of a volcano almoft always burning, - - - ijxfiia 

 Mercaderes, a village three leagues to the north of the river Mayo, which feparates 



the two bifhoprics of Quito and Popayan ; and to which Huayana-Capac, the 



lall Inca, carried his conquefts towards the north, . - ._. , ^45 IIQ 



Popayan, an epifcopal city, - - - - . - . . . -2271 54 



Places out of the Cordelier. 



La Plata, - - 2 23 2 51 



Bacche, a hamlet half a league weft of the river Magdalene, - - - - -316 3 25 

 Neyva, a fmall town on the other fide of the river Magdalene, and nearly three 



leagues and a half diftant from Bacche, and fouth-fouth-eaft of it, - - - 



La Villa Vieja, upon the eaft fide of the fame river, and three leagues north-eaft 



from the fame hamlet, ------.-._. 



Honda, the firft port up the river Magdalene, 51640 



Mariquita, a fmall town four leagues to the weft one quarter fouth-weft of Honda j 



the river Givali running from Mariquita, pafles through the middle of Honda, 

 Ibague, a fniall town eighteen leagues to the fouth of Honda, and eleven to the wett, 



the road divides here fiom Carthago, and which they jonrney with oxen. Ibague 



is five or fix leagues to the weft of the Magdalene, - - - . 



Mompox, a very commercial port upon the weftern bank of the river Magdalene, - 919 45 

 Tama'ameque, a fmall town upon the eaft ftiore of the river ; — is nearly eight 



leagues and a half to the fouth of Mompox, and thirteen leagues to the eaft, 

 Laporquera, a town upon the weftern fide of the Magdalene, and three leagues from 



the mouth of it, . ... - 10 59 3 58 



2 I was 



