132 



Meteorological Observations. 



Fig. 5. Gryphaea vomer. 



6. Ostrea falcata. 



Var. nasuta. 



7. Idem. 



Var. mesenterica 



Fig. 8. Terebratula Harlani. 



Var. discoidal. 

 9. Idem. 



Var. rectilateral. 



10. Pholas cithara. 



11. Clavagella armata. 



PLATE X. 



Fig. 1 . Ostrea torosa. 



2. Ostrea urticosa. 



3. Pecten calvatus. 



4. Pecten membranosus 



5. Balanus peregrinus. 



6. Spatangus ungula. 



7. Echinus infulatus. 



Fig. 8. Scutella crustuloides. 



9. Clypeaster geometricns. 



10. Cidaretes diatretum. 



11. Terebratula lachryma. 



12. Clypeaster florealis. 



13. Conus gyratus. 



Art. XII. — Abstract of Meteorological Observations, taken at Ma- 

 rietta, Ohio, with notices of Floods, Fruits, and flights of Pi- 

 geons; by S. P. Hildreth, in the year 1832. Lat. 39° 25', 

 North, Long. 4° 28', West of Washington City. 





THERMOMETER. 











RAIN. 





Months. 



peratures. 



* 



* 





£ 



^ 



m 





• 





r* ] 



* 



Prevailing winds. 





S 



S 



_4 



i 



■ 





C5 





03 



•9 



■ 



•3 





■ 



fl 







a 



c 



g 



«5 



- 















- 









s 



3 



Q 



u 



rrt 



3 



o 





C 

 







t s 



55 



£ « 



14 



26 



12 



s 



19 



3 



4 



a 



50 





January, 



29.10 



-9 



64 



w. &. s.w. 



February, 



37.00 



65 



4 



61 



11 



24 



5 



24 



10 



25 



N. & N.W. — S.W. & S.E. 



March, 



43.25 



74 



8 



66 



9|18 



22 



9 



1 



33 



ft 



N. & N.W. S. & S.W. 



April, 



54.33 



84 



30 



54 



14 



4 



20 



10 



2 



00 



N. & N.E. W. 



May, 



60.70 



85 



37 



48 



3 



6 



18 



13 



3 



16 



S.S.W. & S.E. 



June, 



68.00 



88 



44 



44 



13 



20 



21 



9 



2 



85 



S.W. & N. 



July, 



70.60 



92 



48 



44 



8 



15 



24 



7 



3 



08 



S.S.W. & N. 



August, 



69.33 



88 



45 



43 



14 



25 



20 



11 



7 



92 



S.W. E. & S.E. 



September, 



63.00 



86 



43 



43 



18 



26 



24 



1 



6 



2 



08 



S.S.W. & W. 



October, 



54.00 



82124 



58 



20 



29 



22 



9 



2 



75 



S.W. N.&E. 



November, 



43.75 



69 16|53 



3 



25 



22 



15 



15 



3 



75 



W. & S.W. 



December, 

 Mean, year, 



36.00 



60 



7 



53 



31 



13 



1216 



18 

 )150 



4 



66 



W.&S.W 



52.42 







48 



133 



Mean temperature for the year, 52.42°, being nearly two degrees 

 greater than last year, but still about two less than the average tem- 

 perature of the seasons in this climate. 



