104 



Proceedings of the British Association. 



Although Mr. Peach had found but four rows of suckers, there 

 would probably be seen the rudiments of a fifth. He considered the 

 circumstance of Nereis tubicola floating accidental. 



Dr. W. B. Carpenter confirmed Mr. Peach's observations on the 

 ova of Doris, as he had found the same arrangement of the ova as 

 mentioned by Messrs. Alder and Hancock. 



Section F.— STATISTICS. 

 On taking the chair, Col. Sykes made a few observations on the 

 nature and objects of statistical science, after which he called upon 

 Mr. Porter to read a paper on the mining districts of France. This 

 paper was a continuation of that which the author read before the 

 Statistical Section at the Newcastle Meeting. On that occasion, the 

 report was brought down to the close of the year 1836, and Mr. 

 Porter now continued it from the official documents to the end of the 

 year 1841. It must be remembered, that regular statistics of the 

 mineral products of France was commenced in 1832, and conse- 

 quently, we have as nearly as possible a power of determining the 

 progress of mining industry in France, during a period of nine years. 

 For the purpose of illustrating the advance made in this branch of 

 productiveness, he directed attention to the following table, giving 

 the value of minerals raised in the years 1832, 1836, and 1841 ; 

 that is to say, during the nine years of which alone accurate records 

 are attainable. 



Coal, Lignite, and A 



thracite 



Iron and steel 



Silver and lead . . . 



Antimony 



Copper 



Manganese 



Alum and sulphate 



iron 



-} 



of 



or in Sterling Money, £ 



1832. 



f.16,079,670 



87,312,994 



856,673 



71,233 



247,680 



105,150 



1,077,595 



1836. 



26,607,071 



124,384,616 

 881,534 

 305,032 

 196,624 

 152,671 



1,760,607 



1841. 



33,159,044 



141,789,560 

 774,033 

 155,251 

 278,676 

 147,783 



2,052,043 



105,750,995 154,228,455 178,356,090 

 4,230,040 6,169,138 7,134,123 



The per-centage increase in 1836 over 1832 was 45*84 

 in 1841 over 1836 .. 1562 



and for the whole years 68'65, or, 



7 63 per annum. 



