Meteorological Observatioris. 151 



dimorphism, for oligoclase is plagioelastic, and yet both must be 

 classed under the same genus. Loxoclase fuses before the blowpipe 

 with difficulty (fusibility between adular and labrador), and shows 

 in the outer flame an intense soda reaction. (Oligoclase melts pretty 

 easily.) Heated in a small glass bulb it gives out a little water and 

 fluoride of silicon, and is very imperfectly decomposed by hot muriatic 

 acid. Loxoclase occurs with pyroxen, graphite, and calcareous spar, 

 upon the two former covered by the latter, at Hammond, in the State 

 of New York. — Poggendorff's Annalen. 



FAHTigfla ** ' t i e . ja imap aTiaJs** _ 



METEOROLOGICAL OBSERVATIONS FOR JUNE 1846. 



Chiswick. — June I, 2. Slight haze ; cloudless. 3. Slight haze : very dry air : 



clear and fine. 4—6. Hot and dry. 7. Sultry. 8, 9. Cloudy and fine. 10. 



Overcast. 1 1, 12. Very fine. 13, 14. Hot and dry. 15. Cloudless. 16 — 18. 



Hot and dry, with slight haze. 19. Foggy: excessively hot: clear at night. 



20. Hot and sultry. 21. Uniformly overcast : fine. 22. Sultry: excessively 



hot : rain : at night thunder, lightning, and heavy rain. 23, 24. Densely clouded. 



25. Fine. 26. Overcast : heavy showers. 27, 28. Cloudy and fine. 29. Fine, 



with clouds : windy : clear at night. 30. Cloudy and fine : overcast. 



Mean temperature of the month 66°*63 



Mean temperature of June 1845 62 *14 



Average mean temperature of June for the last twenty years 60 *88 



Average amount of rain in June l - 88 inch. 



,. , — \ • M 



Boston. — June I. Cloudy. 2. Fine : half-past 1 1 o'clock a.m. thermometer 75° : 



2 o'clock p.m. 78°. 3. Fine: 3 o'clock p.m. thermometer 80°. 4. Fine. 5. Cloudy. 



6. Fine : quarter-past 2 o'clock p.m. thermometer 82°. 7. Fine. 8. Cloudy : 



lightning a.m. 9, 10. Cloudy. 11 — 17. Fine. 18. Fine: quarter-past 11 o'elock 



a.m. thermometer 80°. 19. Fine. 20. Cloudy. 21. Fine. 22. Cloudy: rain 



p.m., with thunder and lightning. 23. Rain : rain early a.m.: rain p.m. 24. Fine. 



25. Fine u rain and hail, with thunder and lightning p.m. 26 — 28. Cloudy. 



29, 30. Fine. — The past month has been considerably warmer than any month of 



my observations. 



Sandwick Manse, Orkney. — June 1 — 3. Fine. 4. Fine: bright: fine. 5. Fine : 

 bright : cloudy. 6. Damp. 7. Damp: cloudy. 8. Cloudy. 9. Damp: fog: 

 cloudy. 10. Cloudy: rain. 11. Bright: rain. 12, 13. Bright: clear. 14, 

 15. Bright: cloudy. 16. Bright: clear. 17, 18. Fine. 19. Thunder and hail*: 

 cloudy. 20. Clear : fine. 21. Clear. 22. Cloudy : fog. 23. Rain and thunder : 

 thunder and rain. 24. Drizzle : thunder and drops. 25, 26. Clear. 27. Rain : 

 clear. 28. Bright : cloudy. 29. Bright : drops. 30. Bright : showers. 



Applegarth Manse, Dumfries-shire. — June 1—6. Very fine. 7. Very fine : 

 thunder. 8. Fine soft rain. 9, 10. Slight shower. 11. Fair, but cloudy. 

 12 — 16. Fair and fine. 17. Fair and fine : warm. 18. Fair and fine: thunder. 

 19. Slight drizzle: thunder. 20. Dry and withering. 21. Very warm and 

 withering. 22. Very warm : showers : thunder and hail. 23. Very heavy rain. 

 24, 25. Showers : fair p.m. 26 — 29. Heavy rains. 30. Very heavy rain. 



Mean temperature of the month 63°*2 



Mean temperature of June 1845 56 '5 



Mean temperature of June for twenty-three years . 55 '1 

 Mean rain in June for eighteen years 3 inches. 



, 



* The most severe thunder-storm ever remembered : one man was killed, others 

 knocked down, and the lightning struck various places. It was at its height be- 

 tween six or seven o'clock a.m. 



