NOTES AND QUERIES. 



385 



tlie author) to see at a glance the specific relationship (so far as at present 

 known) which exists between the life-groups of the later palaeozoic periods. 

 The generic affinity of these groups has long been noticed. This affinity and 

 other apparent indications of a want of systematic difference originated the 

 proposal that the Permian should be included in the Carboniferous system ; 

 and Mr, Kirkby considers that the existence of the several recurrent Carboni- 

 ferous species in the Permian rocks strongly supports this view, and that 

 " Permian" should be retained only as a subordinate term, 



2. " On the E-ocks, Ores, and other Minerals on the property of the Marquis 

 of Breadalbane in the Highlands of Scotland." By C. H. G. Thost, Esq. 

 Communicated by Prof. J. Nicol, E.G.S. 



After noticing generally the mica-schists of the district, with its limestone 

 or calcareous schist, and occasional roofing-slate, the author proceeded to 

 describe first the porphyry-vein (half a mile wide), containing silver-ore, copper- 

 pyrites, grey copper-ore, iron-pyrites, and molybdena, and crossing a vein of 

 non -metalliferous greenstone, at Tomnadasham, on Loch Tay, opposite Ben 

 Lawers. He then pointed out the probable connection of the existing great 

 valleys with lines of fracture due to igneous violence. The veins at Ardtalla- 

 naig, containing heavy spar, and ores of zinc, copper, and iron, were next 

 noticed. At Correbuich there are two sets of veins in the calcareous schist ; 

 those having a north and south direction contain argentiferous galena and 

 traces of gold. The most eastern hills on Loch Tay, in the neighbourhood of 

 Taymouth, abound with quartzose veins containing copper-pyrites, iron-pyrites, 

 and galena. The iron-ore of Glenqueich, and the serpentine and chromate of 

 iron at Corycharmaig, where graphite and rutile also occur, were next noticed. 

 At Lochearn Head there are galena-veins in calcareous schist ; here, too, some 

 auriferous arsenical pyrites has been found. Lastly the author described in 

 some detail the lead-bearing veins of Glen Pallich and Tyndrum, which have 

 been worked for many years. 



NOTES AND QUERIES. 



Hammthis of Stone and Plint. — The daily discoveries of implements of 

 flint and stone throughout Yorkshire and other counties in England have often 

 caused people to wonder and ask the same questions which are made by 

 " Inquirer" in your " Geologist" of last month ; and having been for several 

 years a collector and storer of implements of flint and stones, you will perhaps 

 allow me through your pages to make as concisely as possible a few remarks 

 on the hammers in my own collection, and in the public collections m London, 

 Dublin, and Edinburgh, from which I have no doubt " Inquirer" and others 

 may draw conclusions of such a nature as will satisfy their curiosity, enlighten 

 their understanding, and give pleasure to all who make matters of this descrip- 

 tion their study. In a magazine devoted to a science of so much importance 

 as Geology, it cannot be expected that you can devote so much space to re- 

 marks which have not a direct bearing on the subjects to which your pages are 

 generally dedicated ; but the finding of so many implements of stone and flint 

 at great depths below the surface of the earth, which have been made by 

 human beings, having created a great amount of interest, I may perhaps 

 trespass more on your space than I otherwise should have done. 



In the collections mentioned there are a great quantity of hammers ; upwards 

 VOL. 111. 3 c 



