1851.] A Twentieth Memoir on the Law of Storms. 13 



that we are only yet at the threshold of what we have still to find ; 

 but it will be the first successful working of a mine which will stimu- 

 late speculation in that branch of industry, and I have spared, and 

 shall spare no trouble to assist it, so far as the resources of the museum 

 extend. 



H. PlDDINGTON, 



Curator Museum Economic Geology. 

 Calcutta, 3\st December, 1850. 



No. 48. 

 From the Under Secretary to the Government of Bengal, 

 To H. Piddington, Esq., Curator Museum Economic Geology. 

 Dated, Fort William, 8th January, 1851. 

 Sir, — I am directed by the Deputy Governor of Bengal to ac- 

 knowledge the receipt of your letters dated the 3d July last and 31st 

 ultimo, and to state that His Honor has perused with interest your 

 reports on the qualities of the ores from the Deoghur Mines in the 

 Zillah of Beerbhoom. 



(Signed) W. Seton Karr, 

 Under Secretary to the Government of Bengal. 

 (True Copy,) 



H. Piddington, 

 Curator Museum Economic Geology. 



A Twentieth Memoir on the Law of Storms in the Indian and China 

 Seas, being the April Cyclone of the Bay of Bengal ; 23rd to 

 28th April, 1850. — By Henry Piddington, President of Marine 

 Courts. 



In April, 1850, the Eastern quadrants of a Cyclone passed over 

 Calcutta which, there was no doubt, had been a severe one at sea and 

 in other parts on shore ; and which I so announced in the papers, and 

 I have been diligently employed since that time in collecting the 

 documents necessary for its investigation, some of which only reached 

 me lately from England. The present Memoir is the result of my 

 labours, and it will I hope be found worthy of its predecessors, tracing 

 as it does a severe, and at times a furious, Cyclone for a course of a 



