Meteorological Observations. 319 



in a solution of arsenic does not prevent the development of the 

 latter, while acetic acid and camphor destroy them. Prof. Klencke 

 deduces the following conclusions from an extensive series of expe- 

 riments : — 



1st. That in all hydatids we observe a cyssiparous and ovii)arous 

 reproduction. 



2nd. That there are false hydatids which propagate by blastoderm 

 (blastidie). 



3rd. That all hydatids are transmitted from one organism to an- 

 other, and being found in our fluid aliments and in the flesh of ani- 

 mals can be transmitted by infection. 



4th. That the Acephalocysts are not distinct from the Echinococci, 

 but merely the ova of the latter with or without the parent cyst. 



5th. That whatever be the way by which they have entered the 

 animal system, hydatids can be conveyed by the current of the cir- 

 culation. 



6th. That certain agents in the organism and medical substances 

 have the power of destroying them. A. T. 



METEOROLOGICAL OBSERVATIONS FOR FEBRUARY 1844. 

 Chiswick. — February 1. Frosty : very clear and dry : frosty. 2. Snowing : 

 frosty at night. 3. Frosty: clear, vvith bright sun : overcast and frosty. 4. Snow 

 in broad flakes : densely clouded and rapid thaw at night. 5. Frosty : clear : 

 severe frost. 6. Sharp frost : clear and fine: overcast. 7. Hazy, with slight rain : 

 overcast : heavy and continued rain in the evening. 8. Frosty: very clear : frosty. 

 9. Frosty: lightly clouded: densely overcast. 10. Cloudy. 11. Slight rain. 

 12. Uniformly overcast : clear and fine: foggy and frosty. 13. Frosty, with 

 dense fog : frosty, with fog at night. 14. Thick hoar-frost : clearing : overcast. 



15. Slightly overcast and fine: hazy, with rain. l(i. Clear and fine. 17. Over- 

 cast : clear. 18. Cloudy : slight rain at night. 19. Densely clouded : clear and 

 windy. 20. Clear and frosty : fine : clear, with sharp frost at night. 21. Snow- 

 ing in broad flakes ; sleet and rain : hazy. 22. Snowing : clear and frosty. 23. 

 Sharp frost: overcast: heavy rain from six till nine p.m. 24. Clear : cloudy : 

 clear and frosty. 25. Rain: squally: cloudy and tine. 26. Heavy clouds and 

 showers : stormy, with rain at night. 27. Clear, cold and dry. 28. Clear and 

 cold: fine, with sun : cloudy. 29. Very fine : rain. — Mean temperature of the 

 month 3*59° below the average. 



Boston. — Feb. 1. Fine. 2. Cloudy : snow early a.m. 3. F"ine. 4. Snow. 

 5,C>. Fine. 7. Rain : rain early a.m. 8. Fine : rain early a.m. 9. Fine. 10. 

 Fine: snow a.m. 1). Snow ; snow early a.m. 12. Fine. 13 — 1.5. Cloudy. 



16, 17. Fine. 18. Fine: rain p.m. 19. Cloudy: rain a.m. 20. Fine. 21. 

 Cloudy : snow p.m. 22. Cloudy. 23. Cloudy : snow early a.m. : snow p.m. 

 24. Stormy : snow P.M. 25. Cloudy : rain a.m. and p.m. 26. Cloudy : thunder 

 p.m. 27. Fine: snow early a.m. : snow p.m. 28. Cloudy. 29. Fine: melted snow. 



Sdiulwick Manse, Orkneii. — Feb. 1. Bright: clear larye halo. 2. Bright: clear: 

 fine. 3. Bright : cloudy. 4. Damp : showers. 5. Showers. 6. Snow-showers: 

 cloudy. 7. Rain : showers. 8. Snowing : aurora. 9, 10. Snow-showers. 

 11. Bright : cloudy. 12. Bright : cloudy : thaw. 13. Cloudy. 14. Drizzle: 

 cloudy. 15,16. Showers: sleet. 17. Bright : clear aurora. 18. Cloudy : snowing. 

 19. Snow-drift. 20. Snow-showers. 21. Bright: snow-showers. 22. Snow- 

 showers : drift. 23. Bright : drift. 24, 25. Drift. 26. Bright : snow-showers. 

 27. Bright : haze. 28. Bright : clear. 29. Bright : large halo. 



Apjilegarlh Manse, Dumfries-shire. — Feb. I. Frost. 2. Frost and snow. 3. 

 Frost: clear. 4. More snow : frost. 5. Frost: clear. 6. Frost. 7. Snow. 

 8. Snow: frost. 9. Thaw. 10, 11. Frost. 12. Snow: frost. 13. Thaw. 

 14. Thaw and fog. 15. Fine thaw and rain. 16. Slight showers. 17. Showers 

 P.M. 18. Very wet. 19. Rain : slight showers. 20. Frost again. 21. Frost: 

 a little snow. 22. Frost: snow-shower. 23. Heavy fall of snow : frost. 21 — 

 27. More snow : frost. 28. Snow and thaw. 29. Rain i'.m. 



