11 



observations at tlie font nf the uiauntaiii by ^^l■, Waila. 'I'liosc (ilisjrvations, 

 to'^ether witli all of the meteorological work done, will be fouii'l in the secoiiil 

 report fro'ii the Meteorological Observatory of the University,— ^leiuoirs o( the 

 Science Department of the Univei-sity of Tokio. No. 7.— "Meteorology of Tnkio 

 for the Year 1S80." 



The following is the list of the priiieipil instruments ami ap[)liin:e.s c.uried 

 to the summit of tlie mountain. 



Two pendulums. 



Supports for same with break-circuit arnngemerit i£c. 



Chronograph. 



Break-circuit chronometer (Negus. 1629 ). 



Small Alt-azimuth instrument. 



Mercuri il barometer. 



Maximum and Minimmu Thermometers. 



Hygrometer. 



Thermometers. 



Magnets & Case for swinging. 

 With batteries and other miscellaneous articles necessary to the success of the 

 undertaking. 



Considerable difficulty was anticipated in getting the ap[)aratus safely to 

 tlie top of the mountain. The two [»cndulums were packed together in one bo.x 

 so that injury to either in transportation would hardly be possible. The chro- 

 Dograjili wa.s separated into parts and jiackcd in different boxes. It was 

 thought best to GU'ry th.; alt-azimuth in its case as a whole aal, after some 

 difficulty, a man was found who luidertook to carry it to the summit. Every- 

 thing reached the top of the mountain in good condition and on the afternoon 

 of August 4th the chronograph was mounted and the pendulum vibrations 

 were commenced. Considerable trouble was experienced in finding a suitable 

 place in wliicli to conduct the experiments. A small tent had been sent up for 

 the use of the party but it was at once seen that, owing to the high win U whijli 

 are .''o frequent ujion the summit and wliich are likely to occur at any time, it 

 would 1)C impossible to carry out the expenments safely iu that. There are 

 s(j\'eml small stone liuts ujion the top of the mountain which are use<l as temples 

 or as resting places for the pilgrims who visit the ninimtain aniuially, during the 

 iniiuths of .Tuly and August, in gre.it numbei-s. Through the kindness of Mr. 

 Kinoshita a priest in cliarge of some of these small temples we were permitted 

 to t;ikc jiossession of one of them and to mount our instriuncnts within it. It 

 )irovc<l to be mlmirably suited to our puii)ose8, its heavy stone walls affording u« 

 at once complete protection from the wind and a firm mounting for the support 

 u|)oii which our penduhims vibrated. 



To secure, a» far as jtossible, against any possibility of entire loss of residta 

 from accident two pendulums were carried to the mountain. As it was impossible 



