Meteorological Observations. 431 
are flanked by ranges of limestone hills, similar in character to those 
below on the tierra templada. Undoubtedly the range which bounds 
the plains of Anahuac to the east is very rich in mineral treasure, 
as specimens of silver ore are frequently brought in by the Indians, 
but they, like those of Peru, conceal their knowledge of the localities 
with the utmost care. About three leagues from Perote I saw a vein 
of sulphuret of silver three feet in width, associated with blende and 
sulphate of copper.—Proceedings of the Academy of Natural Sciences 
of Philadelphia, vol. iv. p. 91. 
METEOROLOGICAL OBSERVATIONS FOR MARCH 1849. 
Chiswick.—March 1. Cloudy: clear and windy: cloudy. 2. Fine: cloudy: 
clear. 3. Overcast. 4. Clear: cloudy and fine: clear. 5. Fine: frosty. 6. 
Frosty : fine: overcast. 7. Cloudy: boisterous, with rain at night. 8. Fine: 
hail-shower : clear and frosty at night. 9. Clear and frosty: very fine: slight 
snow. 10. Clear: cloudy. 11, 12. Overcast throughout. 13. Fine. 14. Cold 
dusky haze, 15, 16. Overcast. 17. Foggy: fine: clear. 18. Foggy, with heavy 
dew: hazy: foggy anddamp. 19. Foggy: overcast. 20. Dusky haze: over- 
cast: clear. 21. Overcast: clear. 22. Foggy: cold haze: overcast. 23. Over~ 
cast: cold haze: densely overcast. 24. Fine, but cold: clear and frosty at night. 
25. Snowing : cloudy and cold: overcast. 26. Densely clouded. 27. Dry haze. 
28. Foggy: overcast throughout. 29. Hazy: rain: cloudy. 30. Heavy showers, 
$1. Clear: fine: cloudy. 
Mean temperature of the month  ........ce00 éashpnewapeebinss eos 41°56 
Mean temperature of March 1848  ......sescescescscencersereces 42 °43 
Mean temperature of March for the last twenty years ...... 42 °62 
Average amount of rain in March ............+000+. shi ak sana 1°36 inch. 
Boston.—March 1. Cloudy: rain a.m.and stormy. 2. Cloudy. 3. Fine. 
4. Cloudy. 5,6. Fine. 7. Fine: rainr.m. 8. Cloudy: snow p.m. 9, 10. 
Fine. 11. Cloudy. 12. Fine. 13. Fine: rain early a.m. 14—16. -Cloudy. 
17, Fine. 18, 19. Foggy. 20—22. Cloudy. 23. Cloudy: rain p.m. 24. Snow. 
25. Cloudy. 26. Fine. 27. Cloudy. 28. Rain: raina.m. 29. Cloudy: 
rainr.M. 30,31. Fine; rain p.m. 
Applegarth Manse, Dumfries-shire— March 1. Fair and clear a.m.: getting 
cloudy: raine.m. 2. Fair a.m.: showers. 3. Fair: wind rising. 4. Fair: 
cloudy: fine sunset. 5. Slight shower: cleared. 6. Fair: cloudy: high 
wind p.m. 7. Rain all day, but light. 8. Frost hard: clear all day. 9. Frost 
keen. 10. Frost increasing in keenness. 11. Frost slight: shower. 12. Fine 
spring morning: got colder. 13—17. Fine dry weather. 18. Very fine day. 
19. Still finer, like May. 20. The same, beautiful weather. 21. The same: 
fogr.m. 22. Frost during the night: fine day. 23, 24. Fine, though dull. 
25. The same: brighter. 26. Frost: dullp.m. 27. The same dullness: no frost. 
28. Clear and cool. 29. Shower early. 30. Showery, 31. Slight drops of rain: 
slight frost. 
Mean temperature of the month ....... ioxddichavissuarcess 41°8 
Mean temperature of March 1848 ............ seuss peueed 41 *2 
Mean temperature of March for twenty-five years ...... 391 
Rain in March 1848 ............. dev teatpeoey Ceo rest soeee 41 inches, 
Rain in March for twenty years ....... tupepvedvesevuk dbase 2S | > 
Sandwick Manse, Orkney.—March 1, Bright : hail: light showers. 2. Cloudy : 
showers. 3. Cloudy: clear. 4. Clear: showers. 5. Sleet: showers. 6. Showers, 
7. Sleet: snow-showers. 8. Snow-showers. 9. Drift: snow-showers. 10. 
Thaw: showers. 11. Rain: drizzle. 12. Cloudy: snow. 13. Snow-showers: 
thaw. 14. Drizzle. 15. Fog: damp. 16. Fog: fine. 17. Fine: fog. 18, 
19. Fog. 20. Fine: clear aurora. 21. Fine: cloudy. 22. Fog: cloudy. 23, 
Rain. 24, Damp: drizzle. 25. Drizzle: aurora, 26. Sleet-showers: clear 
aurora. 27, Cloudy: showers. 28. Cloudy: clear aurora. 29. Cloudy. 30. 
showers. 31. Damp: clear. 
