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587, in the 2d col. againft 19,90, for 12337,0, read 12377,8 
20,70, for 11350,0, read 11350,8 
588, 30,40, for 1236,6, read 1356,6 
in the laft col .far 81,0, read 81,8. 
590, 2. for uppermoft, read approximate 
In plate XI. Ill col. of the table of the /f and Tides of the A* for End of the bafe 1. 2# 
read End, of the bafe , 1.2. 
In the fmall fcale of feet at the fide of the feftion of the mountains for 1500, read ■ 
15000 feet. 
608, 3. for July, ran/Auguft 
628, 4. from the bottom for 159, read 152 
642, 13. for piftons were, read pi Hon was 
658, 10. for plate XVI. read plate XV. 
662, 5. for plate XVII. read plate XVL 
15. after inverfe, infert ratio, 
685, 5. a point after unaltered. And for but that in, read But in. 
705, Tab. IV r . 9th experiment, column 132® to 152°, for 9,14350, read 9,14550 
736, At the end of the note, fur Barometer, read Barometers 
7 77, 1/74. December 10, weight of quickfilver to air, for 11445, re0i * I0 44 £* 
78r, 13th Station, obferved fuperior barometer, for 25,691, read 25,961 
785, 3d Obfervation at Belmont Caltle, inferior equated barometer, for 29, 64. , 
read 29,664 
819, 7. for were the Ihort, read were fhort 
821, 5.. for 15 read 1 6. , 
