1832.] On the Habits of the Paludinie. 411 



undertaken by an astronomical friend, who will combine the results 

 here published with his own observations at Madras, I shall leave the 

 subject in his more able hands. 



I have been favored with the following observations of the transit 

 at other places : 



At the Surveyor General's Office, Calcutta. — The mean time of 

 Mercury's outer contact was observed at 2 h. 53 m. 24. 2 s., but the 

 sight was not esteemed good, owing to the state of the weather. 



At Chuprah.— Latitude 25° 43 N. Longitude 5h 39m. E. Mr. 

 Walter Ewer observed the internal ingress of Mercury at 2 h. 

 42 m. 18 s. mean time. u The telescope was a Troughton's three 

 and a half feet achromatic, aperture two and three quarter inch, and 

 power about 60. The time was taken by equal altitudes of the 

 sun on the preceding day. The nearest approach was at about 

 6 h. 8 m., taken with a wire micrometer by Troughton ; but the sun 

 was so low, the refraction so great, and the motion of Mercury so 

 slow, that this can only be considered an approximation. The pre- 

 cise latitude and longitude of the place are not yet determined." 



At Barelly.— Latitude 28° 20' 7" N. Longitude, 5 h. 17 nr 20 s. E. 

 The internal ingress was observed by Mr. H. S. Boulderson, at 2 h. 

 20 m. 58s. mean time Barelly. " This observation may be doubt- 

 ful to two or three seconds, as the planet had just entered the disc 

 of the sun when first seen." 



IV. — On the Habits of the Paludince. By Lieut. T. Hutton, 



37th N. I. 



If it be not against existing rules and regulations, and the matter 

 here furnished be deemed at all worthy a place in your interesting 

 Journal, I propose doing myself the pleasure of sending you occasion- 

 ally a few extracts from my " Notes on Natural History," accompa- 

 nied by specimens of any thing that I may consider worthy of your 

 acceptance. 



On the 21st and 22nd of June, after a few heavy showers of rain, 

 I ventured forth from my bungalow to a grove of mangoe trees hard 

 by, in search of land-shells, or in fact any thing that might fall in my 

 way; at the foot of many of the trees, the water was lying in pools, 

 and wherever this was the case, 1 found a great many small shells, 

 with the living animals in them, evidently just forcing a passage 



