149 



List of Diatomace^e Found in Loch Kinnord Kieselguhr, 

 by the Rev. George Davidson, Minister of Logie-Cold- 

 stone, Dinnet, Aberdeenshire. (Extracted from " Trans. 

 Edinburgh Geological Society.") 



Recently a number of Diatomaceous deposits found in various 

 parts of Scotland have been worked for commercial purposes, 

 amongst other things in the manufacture of paper, the material 

 being mixed with the ordinary pulp to give body and gloss. Most 

 of the material which is called Diatonrite, is very rich in Diatoms, 

 that from Loch Quire deposit, for instance, containing as much as 

 88'732 per cent. That from Loch Kinnord, Aberdeenshire, has 

 been carefully examined by Rev. George Davidson, of Logie- 

 Coldstone, and, as a list of fresh-water forms in a readily procur- 

 able and easily cleaned material will no doubt be of interest to 

 many microscopists, it is printed in extenso below. The original 

 list is, moreover, quite out of print. 



minor 



