154 TUIK: MICRO-KAUNA and flora of MARKlNOTONf. 



Draparnaldia glomerata. Running water. Markington. 



Cocconema lanceolatum. Do. 



Achnanthes exilis. Do. 



Odontidium mesodon. Found in the Ure, Uredale. 



Tabellaria flocculosa. Do., do. 



Surirella, species. Markington Heck. 



Gomphonema truncatum. Do. 



Denticula obtusa. Do. 



Campylodiscus costatus. Do. 



Cocconeis pediculus. Do. 



Homoeocladia anglica. Markington Beck. 



Pinnularia Do. 



Sphinctocystis elliptica. Do. 



Sphinctocystis solea. Do. 



Nitzschia sigmoidea. Do. 



Gyrosigma attenuatum. Do. 



Gyrosigma acuminatum. Do. 



Cymbella gustroides. Do. 



Diatoma vulgare. Markington Beck. A much smaller variety, 



South Stainloy. 

 Bacillaria elongata. ^[arkington Beck. 

 Fragillaria capucina. Do. 



Synedra ulna. Do. 



Synedra splendens. Do. 



Meridion circulare. Mouth of drains, road-side, Markington. 

 Encyonema paradoxum. How Hill. 

 Amphora ovalis. Markington. 



There are many Entomostraca in the ponds, Daphttia />itlex, 

 Cyclops quadricornis, Cypris, etc., etc., but I have not worked at 

 this section. There are many Rotatoria?, especially in water which 

 is not very pure. Water-bears also occur in the mossy tufts in water. 



There seems to me to be a considerable difference between the 

 fauna and flora of Shaw Mill Beck and Markington Beck. Perhaps 

 this is owing to the flict that Shaw Mill Beck flows over Millstone 

 Grit and its derivatives, Markington Beck over Millstone Grit, Boulder 

 Clay, and then over Magnesian Limestone. 



Above the little weir which turns the water to the upper mill, 

 the stream is for richer in DiatomaiWe than it is below. Cray-fish 

 {Astacus fluviatilis) are found in the Shaw Mill Beck, but not here; 

 they are also found in the river Skell. 



Naturalist, 



