Meteorological Observations. 399 
_ Facility of Water Communication in the Northern Parts of South 
America.—A short portage of about seven to eight hundred yards 
separates the basin of the Amazon from that of the Essequibo; and 
by traversing this portage during the rainy season the river Amazon 
and the upper Orinoco may be entirely reached from Demerara by 
inland navigation. So great is the facility for water communication 
in that part of Scuth America, that by traversing the portage above 
alluded to, and by constructing a canal of about three miles’ length, 
between the Guapore, a branch of the Marmore and Madeira, and 
the Rio Aquapehi, a branch of the Jaura and Paraguay, an inland 
navigation would be opened between Demerara and Buenos Ayres 
over an extent of forty-two degrees of latitude. The river Napo 
offers communication with Quito, the Ucayali with Cuzco, the Hu- 
allaga with Lima. Ascending the Rio Negro, and entering the 
Orinoco by the natural canal the Cassiquiare, its tributary the Meta 
offers an uninterrupted navigation to New Grenada, and within 
eight miles of Santa Fé de Bogota.—Schomburgk’s MSS. | 
METEOROLOGICAL OBSERVATIONS FOR NOV. 1840. 
Chiswick.— November 1. Foggy: rain. 2. Showery: fine. 3. Foggy. 4. 
Dense fog: clear and fine. 5. Rain: fine: rainatnight. 6,7. Rain. 8. Clear 
and fine. 9. Boisterous. 10. Cloudy and fine. 11. Hazy: rain. 12, Clear. 
13. Boisterous with rain; barometer very low. 14. Clear. 15. Fine. 16. 
Cloudy and windy. 17. Stormy with heavy rain. 18. Heavy rain. 19. Rain: 
fine. 20. Very fine. 21. Stormy with rain. 22—24. Fine, 25. Dense fog. 
26. Sharp frost. 27, 28. Very dense fog. 29. Foggy: fine. 30. Overcast. 
Boston.—Nov. 1. Fine: lightning r.m. 2. Stormy. 3,4. Cloudy. 5. Rain: 
rain early a.m. 6. Cloudy: raina.m. 7. Cloudy. 8. Fine. 9. Cloudy: rain 
early A.M.: rain a.m. 10,11. Fine. 12. Cloudy. 13. Rain and stormy: rain 
earlya.m. 14. Cloudy. 15. Fine. 16. Cloudy: rain earlya.m. 17. Cloudy: 
rain a.M.and p.m. 18. Fine. 19. Cleudy: rain aA.m.andp.m. 20. Fine. 21. 
Rain and stormy. 22. Cloudy: rain early a.m. 23. Rain: rain early a.m. 
g4—30. Fine. 
Applegarth Manse, Dumfries-shire—Nov. 1. Dull, cloudy, and moist. 2, 
Showery all day. 3. Very fine. 4. Wet nearly allday. 5, 6. Occasional show- 
ers. 7. Weta-m.: cleared up. 8. Slight showers. 9. Rain a.m.: cloudy all 
day. 10, Rain a.m.: moist pM. 11. Thick fog all day. 12. Cloudy and 
watery. 13. Wetand stormy. 14. Fair after rain during night. 15. Fair and 
fine: frosty morning. 16. Rainand high wind. 17. Fair but dull and threaten- 
ing. 18,19. Frost: clear. 20. Thaw: cloudy. 21. Heavy rain a.m.: cleared. 
22. Fairall day. 23. Rainearly a.m. 24. Fair throughoutand warm. 25. 
Drizzling day. 26. Frost. 27. Frost: very hard. 28, Frost: threatened 
change. 29. Cloudy: drizzling. 30. Moist without rain. 
Sun shone out 21 days. Rain fell 16 days. Fog 1 day. Frost 6 days. 
Wind north 1 day. North-east $ day. East-north-east 1 day. East 5 days. 
East by south 5 days. South-east 2 days. South 2days. South-west 5 days. 
West-south-west 1 day. West1 day. West-north-west 3days. North-west 2 
days. North-north-west 1 day. 
Calm 14 days. Moderate 7 days. Brisk 3 days. Strong breeze 2 days. 
Boisterous 1 day. Stormy 3 days. 
Mean temperature of the month .......... - 41°°20 
Mean temperature of November, 1839 ... 43 °37 
Mean temperature of spring-water ....... +. 45 °60 
