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PREFACE of Don ANTONIO MAURELLK 



FOR the better undemanding this Journal, it will be proper 

 to premife the following particulars. 



The charts which we ufed during the voyage were thofe of 

 Monf. Bellin, the one publifhed in 1766, and the other in 17 — ; 

 the firft of which places the port of St. Bias, no degrees W» 

 Long, from Paris, and the fecond 114, differing confequently 

 4 degrees. For this reafon I have always reckoned the Weftern 

 Longitude from St. Bias 3 , and not from Paris. 



At the end there is an accurate table, every page of which in- 

 cludes a month, with an account of the Ship's courfe each day,, 

 together with the number of leagues failed, the longitude, lati- 

 tude, variation of the needle (which laft, when attended to, is 

 marked with an afterilk),, and the diftance from the neareft 

 bind., 



a San Bias is a very fetal i' hamlet, on the W. coaft of the province of 

 Mexico, at the mouth of the River S. Pedro. It is but within thefe 

 few years that the Spaniards have made a fettlement there, for the con- 

 veniency of tranfporting the troops and provifions they fend to California. 

 Dr. Hobertfon's map places it about the 22d degree of N. Lat. and 88th 

 W; Long* from Fero. See alfo Chappe D'Auteroche's account of his 

 journey from La Vera Cruz to S. Bias in 1769. The Latitude of this, 

 port is not fettled, by this Journal, nor Longitude, except by reference. 



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