CONTENTS. 



Introduction 



The Sites of the Observatories ... 

 Description of a Tide Observatory 



Tide-Gauges 



Sun-Dial 



The Duties of the Clerk 



Height of the Zero-Point of the Instruments 



The Determination of the Distance of the Surface below 



Point 



The Working Scale of the Instruments .. 

 Preparation of the Marigram for Reduction 



Harmonic Analysis 



The Eesults of the Analysis 



Takaw 



Iviirun 



Fukabori 



Hosojima . . . 



Tonoura 



Kobe 



Kushimoto ... 



Wajima 



Aburatsubo . . . 



Yokohama ... 



Iwasaki 



Ayukawa 



Otaru 



Hanasaki 



]\rean Values of Harmonic Constants 



the Zero- 



I 

 3 

 5 



6 

 8 

 8 

 9 



10 

 15 

 15 

 16 

 17 

 19 

 21 

 24 

 28 

 31 

 34 

 37 

 41 

 44 

 47 

 50 

 53 

 57 

 59 

 02 



