TOL. XIII.] PHILOSOPHICAL TRANSACTIONS. 647 



A further Account of some Rock-plants groiving in the Lead Mines of Mendip 

 Hills, mentioned in the Philosophical Transaction^^ N° I29. By Mr. John 

 Beaumont, Jun. of Stony Easton in Somersetshire, N° 150, p. 276* 



. The particulars set forth In these figures, more than what have been observed 

 by others, in reference to those rock-plants, are as follows : 



1. A curious radix, somewhat more entire than elsewhere to be found, on 

 which those rock-plants sometimes grow, though it be manifest that they often 

 grow also from plain roots. 



2. Several diversified tops of other radixes. 



3. The manifest tapering of those rock-plants. 



4. Bores of those rock-plants, with 4, 6, and 7, inlets in them; with other 

 differences in their rays and jointings. 



The particular explanation of the figures is below, though it be but short, 

 and not so full as the descriptions I have given of those rock-plants in my for- 

 mer letters, to which I refer the curious reader.* 



The Explanation of the Figures, plata '21. 



Fig. 1, an entire radix, aa foreseams in 2 of the feet wanting in Mr. Lister's 

 figures. 2. The same radix inverted, 3. A broken piece of a radix with rays 

 on the top. 4. The inside of the same. 5. A plate of a radix with the impres- 

 sion of an oval joint on the top. 6. The top of a radix with rays, and the 

 plates curiously wrought. 7- The inside of the same. 8, g, 10, 11, 12. Other 

 tops of radixes. 13, 14, 15, l6, 17, 18, IQ. Several sorts of plates that com- 

 pose the radixes. 20. A rock-plant growing from a plain root, branched several 

 ways and tapering. 21, 22. Two trunks of rock-plants tapering, and with 

 marks of branches torn off. 23. A rock-plant with oval joints growing twist- 

 ing. 24. Another plant with oval joints growing on a scabrous root. 25. A 

 trunk of a rock-plant growing without joint, like coral. 26. Sprouts of mineral 

 coral growing in a heap together. 27- An intorted heap of rock-plants growing 

 on a piece of limestone rock, somewhat resembling the others, being thick set 

 with edges, but having no joints. 28, 29. Two pieces of the summitates or 

 fastigia, mentioned by Mr. Lister in the Philosophical Transactions, N° 100. 

 30 31 . Two single joints of rock-plants with 7 inlets in the bore. 32, 33. Two 

 single joints with () inlets in the bore. 34, 35, 36. Three joints with 5 inlets 

 in the bore. 37, 38. Two single joints with 4 inlets in the bore. 39. A single 



* The petrifactions described in this paper are of a similar nature with those described in a former 

 paper by Dr. Lister; they all belong to the coral tribe, and the reader is referred to the above-men- 

 tioned paper for an explanatory note. 



