Meteorological Observations. 159 



No. 2 is in fine quadrangular prisms, brilliant lustre, consisting 

 of 2 zw c/ + 2 NH3 4- no. or as Dr. Kane considers, zn.cl + (NH3. 

 ncZ) + NH3.ZWO. which losing NH3.H0 leaves z« c/ + NH3.ZW c/. a 

 white mass, fusible, congealing into a mass like gum, and volati- 

 lizable. This gummy mass is likewise obtained by heating NH3ZM c/. 



There is generated by the action of water on these basic ammo- 

 niacal compounds, an oxychloride of zinc of a very remarkable cha- 

 racter ; it is — 



zncl ■\- Szno + 10 ho. 



dried, it is reduced at 212° to 9 ho + and by 300° to 6 ho. By 

 500° all water is driven off, and there remains zncl + 6 zw o which 

 exposed to the air absorbed 3 ho. Hence the general expression is 



Z« cZ + 6 ZW O + 4 HO + 2 HO + 2 HO + 2 HO 



and comparing some similar chlorides, there is, 



1 cfl.c^ + 6 HO crystallized chloride of calcium. 



2 zn cl + 6zn o — basic chloride of zinc dry. 

 3hc^+6ho — strong muriatic acid. 



4 z«c/ + 6 ZM o + 10 HO — hydrated oxychloride of zinc. 



5 H c/ 4" 6 HO + 10 HO — muriatic acid with a constant boil- 



ing point. 



Another oxychloride, having the composition 



Z« C/ + 9 ZM O -f- 15 HO 



which dried and exposed to air, absorbs 6 ho. Hence it may best 

 be considered as 



(zw c^ + 6 zw o -j- 12 H o) +3 (z« o no), 

 giving ultimately 



(zn cl + 6 zno + 3 no) -f- 3 (zwo + ho). 



METEOROLOGICAL OBSERVATIONS FOR JUNE 1838. 



Chisivick. — June 1. Very fine: rain. 2,3. Cloudy and fine. 4. Fine: 

 rain. 5. Hazy : very fine. 6. Slight haze : fine. 7. Fine. 8. Cold 

 and dry. 9. Fine. 10. Cloudy and fine. 11. Hazy: rain. 12. Rain, 

 with thunder. 13. Fine: heavy rain at night. 14, 15. Overcast: rain. 

 16. Drizzly. 17. Cloudy. 18. Overcast: heavy thunder showers. 19. 

 Cloudy and windy. 20. Cloudy: boisterous with rain at night. 21. 

 Cloudy and windy. 22. Showery. 23,24. Very fine. 25. Fine; heavy 

 rain. 26. Hazy : rain. 27. Overcast and fine. 28. Slight showers : 

 very fine. 29. Fine : heavy rain. 30. Fine : rain. 



Boston. — June 1. Rain. 2. Fine. 3. Fine : rain a.m. 4. Fine : rain, 

 thunder, and lightning a.m. 5. Fine : heavy rain and hail, with thunder 

 and lightning p.m. 6. Cloudy. 7. Cloudy : rain p.m. 8, 9. Fine. 10. 

 Cloudy. 11. Rain. 12. Fine. 13. Rain early a.m. 14. Cloudy. 15. 

 Fine: rain p.m. 16. Fine. 17. Fine: rain early a.m. 18. Fine. 19. 

 Cloudy: heavy rain early a.m. 20. Rain. 21,22. Cloudy. 23 — 25. 

 Fine. 26. Cloudy : rain a.m. and p.m. 27. Cloudy : rain p.m. 28. 

 Fine. 29. Cloudy : rain early a.m. 30. Fine : rain p.m. 



