On some Organic Remains from the Tertiary 

 Limestone near Sagara, Tötöroi. 



By 



Kyugaku Nishiwada. 



With Plate A'A'/A'. 



[In tlie spring of tlds year I took advantage of a two days' stay in Sagava, Prov. 

 Tötömi, to examine the Tertiary limestone developed near the town and to collect 

 some of the organic remains ahoanding in it. In this way I came across some 

 nail ip ore limestone, the occurrence of -which in Japan has not yet been 

 recorded. Since then I have made another short visit to this locality and have 

 studied the collected materials, under the supervision of Professor M. Yokoyama, in 

 the laboratory of the Geological Institute, College of Science, Imperial University. 

 Prof. Yokoyama has placed me under great obligations to him for his kind suggestions 

 and for the loan of Giimbers paper on the fossil Lithotlutnuwin. — Hongö, Tokyo ; 

 November, 1894] . 



So far ns I am awavo. there are few ]iniest<~)nes in the Japanese 

 Tertiary tliat can <^\\'c us more g-eon-tio^^tic interest tlian tliat under 

 consideration. 



Upwards of 3 km. noi-tli-west of the town of Sairara, there are 

 two limestone hills, Ivini^' one on either .side of the Ilagimngawa, a 

 river which, after risinii' ii' ^lie environs of Xakanishi, farther north- 

 west of the present site, takes its .sinuous course in a south-easterlv 

 direction between these hills and empties itself into the sea close to 

 the town. That on the right of the stream is lor-ally known as 

 Mekamivama and the other on the left of it as Okamivama or 



