Meteorological Observations. 151 



one takes its place. It may easily be seen at the extremity of the ab- 

 domen by raising the dorsal plate which terminates it, and this repro- 

 duction may be observed repeatedly upon the same male. 



The spermatophore is produced by an appendage of the genital 

 segment, — the ventral plate of this segment being flattened posteriorly 

 and converted into a twisted glandular plate. When the spermato- 

 phore is formed, the vesicle is expelled from the secreting apparatus, 

 and takes its place between two fleshy palettes, by which it is sup- 

 ported at the moment of copulation. It remains in this position for 

 a longer or shorter time, but if the male is prevented from copulating 

 he will after a time allow it to drop. — Comptes Rendus, 2nd July 

 1855, p. 28. 



METEOROLOGICAL OBSERVATIONS FOR JUNE 1855. 



Chiswick. — June 1. Overcast. 2. Cloudy and fine : very clear. 3. Fine : 

 cloudy : overcast. 4. Heavy clouds : very fine. 5. Cloudy : fine. 6. Hot and 

 dry: rain. 7. Very fine. 8. Cloudy: very fine. 9. Showery. 10,11. Very 

 fine. 12. Very fine : clear at night. 13. Slight haze. 14. Overcast : rain. 15. 

 Cloudy: fine: rain. 16. Fine: showery: overcast: heavy rain. 17. Cloudy: 

 slight showers. 18. Clear: cloudy: rain. 19. Overcast and fine. 20. Light 

 clouds : fine : clear : yros/y a/ wfy^^ 21. Clear and fine. 22. Fine : very dry air. 

 23. Overcast. 24. Very fine. 25. Cloudy and fine. 26. Overcast : very fine. 

 27. Dry haze : very fine. 28 — 30. Very fine. 



Mean temperature of the month 57°'98 



Mean temperature of June 1854 56 -93 



Mean temperature of June for the last twenty-nine years ... 60 -39 

 Average amount of rain in June 1*89 inch. 



Boston. — June 1. Cloudy : rain a.m. 2. Cloudy. 3, 4. Fine. 5. Cloudy. 6. 

 Fine. 7. Cloudy: rain a.m. 8. Cloudy. 9. Fine: rain p.m. 10. Fine: rain 

 with thunder P.M. 11. Fine. 12, 13. Cloudy. 14. Rain a.m. and p.m. 15. Cloudy: 

 rain A.M. and P.M. 16. Fine. 17,18. Cloudy: rain p.m. 19,20. Cloudy. 21, 

 22. Fine. 23—27. Cloudy. 28—30. Fine. 



Sandwich Manse, Orkney. — June 1. Bright a.m. : rain p.m. 2. Damp a.m. : 

 foggy P.M. 3. Hazy a.m. : cloudy p.m. 4. Hazy a.m. : clear p.m. 5. Bright a.m. : 

 clear p.m. 6. Rain, thunder a.m. : drops p.m. 7. Foggy a.m. : cloudy p.m. 

 8. Bright, fine a.m. : foggy p.m. 9. Showers a.m. : showers, foggy p.m. 10. 

 Cloudy A.M. : clear p.m. 11. Bright a.m.: cloudy p.m. 12. Rain a.m. and p.m. 

 13. Foggy A.M. and p.m. 14. Clear a.m. and p.m. 15. Cloudy a.m. : clear p.m. 

 16. Showers A.M. : drops p.m. 17. Drizzle, showers a.m. and p.m. 18. Bright 

 A.M.: drizzle, showers P.M. 19. Clear a.m. and p.m. 20. Cloudy a.m. : small 

 rain p.m. 21. Foggy a.m. and p.m. 22. Foggy a.m. : bright p.m. 23. Bright 

 A.M. and P.M. 24. Bright a.m. : bright, rain p.m. 25. Rain a.m. and p.m. 26. 

 Drops A.M. : rain P.M. 27. Bright a.m. : clear p.m. 28. Clear, fine a.m. : bright, 

 fine P.M. 29, 30. Bright, fine a.m. and p.m. 



Mean temperature of June for twenty-eight previous years . 52°-78 



Mean temperature of this month 52 -23 



Mean temperature of June 1854 52 -86 



Average quantity of rain in June for fifteen previous years . 2 21 inches. 



