Meteorological Observations. 319 
tation, fix themselves at will so as to undergo a final metamorphosis, 
and they become Gamasi or Uropodi, from which they differ as much 
at least as the swimming Hydrachni or Acari differ from their larvee ; 
but these fix themselves by their mouth, and increase by sucking the 
nutritive fluid of the insects of which they are the parasites. Ought 
therefore the Hypopi to be called larvee, when under this denomina- 
tion have hitherto been comprised animals capable of nourishing 
themselves by aliment derived from without, thus accumulating the 
materials requisite for their ulterior transformations, so that in those 
insects the metamorphosis of which is complete, the pupa takes no 
further nutriment, and the perfect insect is sometimes in the same 
case, as in Bombyx for example? Here, on the contrary, we have a 
ITypopus provided with limbs like an active larva, but taking no nu- 
triment : the Gamasi alone in their perfect state can feed and grow. 
—Comptes Rendus, Feb. 5, 1850. 
METEOROLOGICAL OBSERVATIONS FOR FEB. 1850. 
Chiswick.— February 1. Densely clouded: showery. 2. Slightrain. 3. Cloudy: 
clear. 4. Very fine. 5. Slight rain: very fine: showery. 6. Boisterous. 7. Fine. 
8. Hazy. 9. Very boisterous. 10. Clear: very fine. 11. Rain: boisterous. 
12. Overcast: boisterous. 13. Clear and dry: frosty at night. 14. Rain: 
drizzly. 15. Cloudy: rain. 16. Clear. 17. Overcast. 18. Cloudy: very fine. 
19. Overcast. 20. Densely overcast : rain. 2i. Overcast: clear at night. 
22. Cloudy: very fine. 23. Overcast and fine. 24. Overcast. 25. Foggy. 
26. Foggy: overcast: clear. 27. Foggy: very fine: clear. 28. Foggy. 
Mean temperature of the month .......... Agoctrounansonoacdaa m2 tet0) 
Mean temperature of Feb. 1849  .cscecseccessceecceeues eevee EL Oo 
Mean temperature of Feb. for the last twenty- three years. 39 ‘56 
Average amount of rain In Feb. :.......0c00.:sceseeoees poeeey lcOlaneh. 
Boston.—Feb. 1. Cloudy. 2—4. Fine. 5. Cloudy: stormy p.m.: distant 
lightning. 6. Cloudy: stormy a.m. 7. Fine. 8. Cloudy. 9. Fine: rain p.m. 
10. Fine. 11. Cloudy: rain a.m. and p.m. 12. Cloudy: rain and snow p.m. 
18. Fine: rain p.m. 14. Cloudy: rain a.m. 15. Hipe: 16, Fine: rain a.m. 
17. Fine. 18. Cloudy. 19. Fine. 20, 21. Cloudy. 22. Fine. 23—28. Cloudy. 
Applegarth Manse, Dumfries-shire-— Feb. 1. Heavy rain nearly all day. 2. Rain 
all day: storm p.m. 3. Rain, with high wind. 4. Dullandcloudy. 5. Dull Se 
severe storm of wind and rain. 6. Hurricane, with heavy rain. 7. Snow ths 
of an inch deep: rain p.m. 8. Frost early: rain and winde.m. 9. Rain and 
high wind allday. 10. Fine: frost a.m. : showery p.m. 11. Snow: rain: wind. 
12. Rather fine: slight shower. 13. Hard frost: clear and fine. 14. Rain thick 
and close. 15. Rain: stormy p..: very wet. 16. Showers: very changeable. 
17, 18. Wet a.m.: dull and moist all day. 19. Rain, and fog and wind. 20. 
Showers, short but severe. 21. Rain: storm of wind. 22. Fair, but unsettled- 
looking. 23. Fair: cloudy. 24. Fair and fine. 25. Rain during the night: 
moist. 26. Fine a.m.: showery p.m. 27, 28. Dull, but fair and mild. 
Mean temperature of the month .........:..-00. ~Echpcenccco: 41°°7 
Mean temperature of Feb. 1849 ..........eseeseeeeees Sneusoge 41 ‘2 
Mean temperature of Feb, for the last twenty-eight years. 37 °6 
Average amount of rain in Feb, for the last twenty years. 2°04 inches. 
Sandwick Manse, Orkney.—Feb. 1. Cloudy: rain: cloudy. 2. Showers: 
thunder: cloudy. 93. Showers 4. Sleet: cloudy. 5. Cloudy: sleet-showers. 
6. Showers: clear: aurora. 7 Showers: clear. 8. Cloudy: frost: sleet-showers, 
9. Snow-showers. 10. Bright: snow-showers. 11. Cloudy: clear. 12. Bright: 
snow-showers: aurora. 13. Snow-showers: cloudy: aurora. 14. Rain: drizzle. 
15. Cloudy: hazy: aurora. 16. Sleet-showers: hazy. 17. Rain: drizzle. 18. 
Hazy: drizzle. 19. Rain: hazy: cloudy. 20, 21. Sleet-showers: showers, 
22. Cloudy: showers. 23. Cloudy: hazy. 24. Drizzle: fine. 25, Cloudy: 
fine. 26. Clear: fine. 27. Drizzle: cloudy. 28. Cloudy: fine. 
