Meteorological Observations. 79 



Its specific gravity at 60° F. is about 1 "45 ; that is, a little less 

 than that of chloride of silicium. When it is thrown into water, it 

 occasions an abundant disengagement of sulphuretted hydrogen gas 

 and a slight deposit of sulphur. It boils at above 212" F. ; but the 

 small quantity obtained did not allow of ascertaining its exact boil- 

 ing-point. 



By analysis, it yielded such proportions of its constituents as to 

 indicate for its formula CP S Si, which would give — 



Chlorine 65-47 



Sulphur 14-83 



Silicium '. 19-70 



10000 

 M. Pierre proposes the name of chlorosulphuret of silicium for this 

 compound. — Ibid, Mai 5, 1847. 



METEOROLOGICAL OBSERVATIONS FOR MAY 1847. 



Chiswick. — May 1, Very fine. 2. Cloudy. 3. Rain, 4. Cloudy. 5. Cloudy 

 and fine. 6. Slight fog : fine. 7. Overcast: showery. 8. Rain. 9. Fine: 

 cloudy: densely overcast : rain. 10. Very fine : slight showers, 11. Cloudy. 

 12. Very fine. 13. Cloudy and fine t showers. 14. Showery. 15. Fine: rain 

 at night. 16. Rain: cloudy: rain at night. 17. Cloudy. 18. Fine: rain. 

 19,20. Cloudy and fine. 21,22. Very fine. 23. Very hot and sultry. 24. 

 Cloudy and fine. 25 — 27. Very fine. 28. Slight haze : sultry. 29. Cloudy : 

 thunder and heavy rain. 30. Clear and fine. 31. Cloudless: exceedingly fine. 



JNlean temperature of the naonth 56°*83 



Mean temperature of May 1846 56-16 



Mean temperature of May for the last twenty years ... 55 '01 

 Average amount of rain in May 1 "84 inch. 



Boston. — May]. Fine. 2. Cloudy: rain early a.m. : rain p.m. 3. Cloudy: 

 rain A.M. and P.M. 4. Cloudy. 5. Fine: rain p.m. 6. Cloudy. 7. Fine: rain 

 P.M. 8, Cloudy : rain P.M. 9. Cloudy. 10. Cloudy : rain early a.m. II. Rain. 

 12. Fine: rain, with thunder i'.m. 13. Fine: rain p.m. 14, 15. Fine: rain 

 early a.m. 16. Rain: rain, with thunder p.m. 17. Cloudy. 18. Cloudy; 

 rain p.m. 19, 20, Cloudy, 21—24. Fine. 25. Windy. 26, 27. Fine. 28. 

 Fine : 1 o'clock p.m. thermometer 82°. 29. Rain : 4 o'clock a.m. thunder, hail 

 and rain : rain all night. 30. Fine : rain early a.m. 31. Fine. 



Sandmck Manse, Orkney. — May 1. Bright: clear. 2. Bright: drops. 3. 

 Bright : clear. 4. I3right : damp. 5. Fine. 6, 7. Cloudy : damp. 8, 9. Drizzle: 

 fog. 10. Clear : fine. 11. Cloudy : rain. 12. Rain ; cloudy. 13. Cloudy. 

 14. Rain: fog. 15. Damp: rain : fog. 16. Bright : cloudy. 17, 18. Cloudy : 

 clear. 19. Showers: drizzle. 20. Fog : cloudy. 21. Bright: rain. 22. Showers. 

 23. Clear. 24. Fine. 25. Bright : cloudy. 26. Bright : showers. 27. Fine : 

 clear. 28. Fine : cloudy : fine. 29. Rain: thunder: cloudy: fine. 30. Clear: 

 fine. 31. Cloudy: fine. 



Applegarlh Manse, Dumfries-shire. — May 1. Fine summer day. 2. Mild: 

 showers. 3. Cloudy : keen. 4. Spring, but keen. 5. Cold : wet p.m. 6. Grow- 

 ing: wet P.M. 7. Dull : showers. 8. Dull : wet p.m. 9. Mild: dull: wet p.m. 

 10. Fine growing day. 11 — 14. Dull: showers. 15. Fine summer day. 16. 

 Stormy : wet all day. 17. Wet and cold. 18. Wet and stormy. 19. Dull: 

 wet. 20. Sunshine : fine. 21. Dry : cloudy. 22. Cloudy : showers. 23. Warm : 

 thunder: rain. 24. Fine : clear : wet p.m. 25. High wind : clear. 26. Fine: 

 clear : light : cloudy. 27. Fine : clear: thunder. 28. Fine : wet p.m. 29. Fine : 

 heavy rain P.M. 30. Fine : warm. 31. Remarkably fine. 



Mean temperature of the month 51°*1 



Mean temperature of May 1846 52 '6 



Mean temperature of May for twenty-five years 5i "1 



Mean rain in May for twenty years 1*69 inch. 



