522 Meteorological Observations. 



ones which have the power of germination. Each spore consists of 

 two cells, both of which are furnished on either side just above the 

 point of juncture with a single pore through which the germinating 

 thread protrudes exactly after the fashion of pollen tubes. Occa- 

 sionally all the four pores are fertile, but more frequently one or two 

 only protrude the cotyledonoid. The pores of the two cells, it should 

 be observed, correspond exactly in position. In no case have more 

 than two been observed in each hemispore. — M.J.B. — Gard. Chron. 



METEOROLOGICAL OBSERVATIONS FOR APRIL 1849. 



Chiswick. — April 1. Rain: fine : showery. 2. Densely clouded. 3. Fine: 

 cloudy, 4. Foggy: rain. 5. Drizzly: fine. 6. Heavy dew: very fine. 7. Cloudy: 

 drizzly. 8. Hazy. 9. Foggy: densely overcast. 10. Hazy: heavy clouds. 

 11. Cloudy and cold : clear and frosty at night. 12. Cloudy. 13. Rain. 14. 

 Slight haze : fine : clear and frosty. 15. Rain. 16. Cloudy throughout. 17. 

 Cold and dry : clear and frosty at night. 18. Clear : snow : cloudy. 19. Heavy 

 fall of rain, sleet and hail throughout the day. 20. Snow and hail in forenoon, 

 stormy showers : clear and frosty at night. 21. Clear : cloudy : clear and frosty. 

 22. Overcast : rain at night. 23. Rain. 24. Cloudy. 25, Drizzly : fine. 26, 

 Rain : cloudy : clear : slight frost. 27. Foggy : cloudy : slight rain. 28. Fine: 

 heavy showers : partly hail. 29. Slight haze : very fine : overcast. 30. Fine : 

 clear. 



JVlean temperature of the month 44°'29 



Mean temperature of April 1848.. 47 "33 



Mean temperature of April for the last twenty-three years 47 "53 



Average amount of rain in April 1*46 inch. 



Boston. — April 1. Rain: rain a.m. 2. Cloudy: rain p.m. 3. Cloudy, 4. Fine. 

 5, Rain: rain a.m. and p.m. 6. Fine, 7. Fine: rain p.m. 8, 9. Rain: 

 rain A.M. and P.M. 10. Rain : rain a.m. 11, 12. Cloudy. 13. Rain : rain a.m. 

 and rain and snow P.M. 14. Cloudy : rain a.m. 15,16. Cloudy. 17. Fine: 

 snow P.M.: stormy. 18. F"ine : rain and snow p.m. 19, 20. Cloudy. 21. Fine. 

 22, 23. Fine: rain p.m. 24, 25. Fine. 26. Cloudy: rain early a.m. 27. Fine. 



28. Fine : rain p.m. 29, 30. Fine. 



Apjilegarth Manse, Dumfries-shire. — April 1. Showers: thunder. 2. Spring 

 showers. 3. Showers : thunder. 4. Frost : calm and fine. 5. Showers. 6. 

 Fair : beautiful day. 7. Fair, but rigid and ungenial. 8. Slight shower a.m. : 

 parching wind. 9,10. Fair and chilly. 11. Fair and chilly : frost a.m. 12. 

 Cloudy A.M. : rain p.m. 13. Frost : snow : hail: fine p.m. 14. Snow an inch 

 deep: rain p.m. 15. Fairandfine. 16. Frost : slight shower of snow. 17. Frost 

 very hard : shower of snow. 18. Frost: snow-showers: rain p.m. 19. Frost: 

 shower of snow : fair and keen p.m. 20. Frost : clear and cold : slight shower of 

 snow. 21. Frost very hard : clear and cold. 22. No frost : rain gentle : cloudy. 

 2,3. Rain : soft and warm : blessed change of weather. 24. Fine a.m. : grew 

 cloudy : rain p.m. 25. Fine a.m. : shower of hail : rain. 26. Fine a.m. : shower. 

 27. Shower early : rain and wind p.m. 28. Growing day : one slight shower. 



29. Fairandfine: cloudy p.m. 30. Most beautiful spring day. 



Mean temperature of the month 42°'3 



Mean temperature of April 1848 43 "2 



Mean temperature of April for the last twenty-five years . 44 "4 



Rain in April 1848 2-52inches. 



Average amount of rain in April for the last twenty years 1'76 „ 



Sandunck Manse, Orkyiey. — April 1. Cloudy: rain. 2. Showers: drizzle. 3. 

 Damp : showers. 4. Drizzle. 5. Damp: showers. 6. Damp. 7. Damp: 

 cloudy. 8. Bright: clear. 9, Bright : cloudy. 10, 1 1. Cloudy. 12. Showers: 

 cloudy. 13. Bright : cloudy. 14. Bright : clear : aurora. 15. Cloudy. 16. 

 Snow-showers : snow. 17. Snow -showers : drift: snow-showers, 18. Snow- 

 showers : frost : aurora. 19. Sleet: hail -showers : aurora. 20. Bright : frost : 

 clear : aurora. 21. Bright : clear : aurora. 22. Cloudy. 23. Drops : cloudy. 

 24. Bright : hazy. 25. Clear. 26. Cloudy. 27. Clear. 28. Clear : very clear. 

 29, 30. Fine: cloudy. 



