172 



REPORT — 1856. 



APPENDIX. 



Containing Abstracts which were not received in time to be included in the 

 Sections to which they belong. 



Crystallogenesis, and the Equivalent in the Mineral Kingdom corresponding to 

 Geographical Distribution in the Animal and Vegetable Kingdoms. By 

 Samuel Highley, F.G.S. — (Read in 1854.) 



The author pointed out, that in mineralogy no scientific value could be attached to 

 Locality, equivalent to that which it possessed in botany or zoology ; and although 

 the Leonhards had published works on topographical mineralogy, no laws had been 

 deduced analogous to those of the geographical distribution of plants and animals, 

 though it was very evident local conditions determined the association of minerals, 

 and the aspect, form or its modifications, isomorphic constitution, colour, &c. of the 

 same species ; and as we know from laboratory experience that teinperature, light, 

 electricity, magnetism, catalytic action, &c. are determining influences in crystallogenic 

 force, we must learn in detail the physical as well as the chemical conditions of geo- 

 logical districts in various parts of the globe before we should have data for founding 

 any general laws on the mineral-producing conditions of the earth. The following 

 form was then proposed and described in detail for tabulating local mineralogical 

 phaenomena, which if distributed amongst naturalists, mine-masters, &c. at home and 

 abroad and returns obtained, would furnish matter for deductions, not only of value 

 in mineralogical, but also in physical, geological, zoological, ethnological, and agricul- 

 tural science. 



On some points connected with Agricultural Chemistry. 

 By J. B. Lawes, F.R.S., and Di. J. H. Gilbeut, F.C.S.—{Read in 1854.) 



The authors thus express the conclusions to which their inquiries, mentioned in 

 this paper, which was read at Glasgow, conducted. 



1. That the manure indicated by the resultant requirements of British agriculture, 

 has no direct connexion with the composition of the mineral substances collectively 

 found in the ashes of the produce grown on, or exported from the farm ; and that 

 the direct mineral manures which are required, are not advantageously applied for 

 the direct reproduction of the exported corn, but should be used for the green or 

 fallow crops, an ofl[ice of which it is, to collect from the atmosphere, or to conserve 

 on the farm, available nitrogen for the increased growth of the saleable cereal grains. 



2. That the nitrogen required to be provided within the soil for this purpose, is far 

 greater than that contained in the increase of produce obtained by it. 



3. That the effects of fallow in increasing the growth of the saleable cereal grains 



