Meteorological Observations, 483 



HABITS OF PATELLA PELLUCIDA. 



The animals of this shell are generally described as living on the 

 stem and leaves of the fucus digitatus ; they are sometimes found 

 on the leaves, but the greater number ' occur in holes which they 

 have eaten out, on the under side of the root of this plant. These 

 holes are often of an inch or rather more in depth, and the convex 

 form of the face of the shell may arise from the animal living in an 

 almost hemispherical cavity. The fucus which they inhabit being 

 confined to the rocks, which are only left dry at very low tides, the 

 animals are only to be procured by tearing up by the roots, which 

 may account for their history being almost unknown ; although I 

 find, since this communication was made to you, that it has been 

 described in a neglected paper by Le Gentil, in the Memoires de 

 l'Academie for 1788. The shells are abundant on the coast of Sus- 

 sex, and near Berwick on Tweed, where I first found them in com- 

 pany with my friend Dr. Johnston. — J. E. Gray. 



METEOROLOGICAL OBSERVATIONS FOR JUNE 1838. 



ChiswicJc. — 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. 

 Clbudy 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 r.M. 27. Cloudy : rain p.m. 28. 

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



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