338 
ME. WAEEEN DE LA EUE ON THE 
ages for convenience of transport. Among the miscellaneous requisites were included ; — 
distilled water weighing 139 lbs.; engineers’ and carpenters’ tools weighing 113 lbs. ; 
lanterns, lamp-oil, spirit-lamp, and spirits of wine, weighing together 73 lbs.; a small 
stove and kettle for boiling water, and, lastly, some preserved provisions, in case the 
party should be compelled to encamp for a few days. Owing, however, to the excellent 
arrangements most kindly made by Mr. Vignoles, the latter were quite unnecessary. 
As my plans became matured, it occurred to me that it would be desirable to make 
determinations of geographical position ; and I therefore borrowed from the Kew Obser- 
vatory a small transit theodolite with 6-inch altitude and azimuth circles, both reading 
with the verniers only to one minute of arc. The optical part of the instrument was 
found to be very indifferent, and the readings of the altitude circle were, from some 
cause, not so accordant from time to time as they ought to have been. I took with me 
also three chronometers — a box chronometer, a pocket chronometer, both indicating 
Greenwich mean time, and my journeyman sidereal chronometer. 
I was induced to make preparations for eye-observations (which I did not origmally 
contemplate), partly in order that I might be in a position to interpret from my own 
sketches and recollections the results of the photographs, and partly because in case I 
should fail in making photographs, I might still be able to contribute something to 
the series of optical observations. I therefore took with me a beautiful achromatic of 
3 inches’ aperture, which Mr. Dallmetee had kindly lent me for the occasion. This 
telescope was mounted by Messrs. Teoughton and Simms on a most convenient and 
steady altazimuth-stand, designed by the Astronomer Royal. The equatorial movement 
was effected by the joint action of two radius bars, which enabled me to keep the sun 
exactly within a tangential square, which I had had ruled upon glass and placed in the 
focus of an eyepiece to be described hereafter. 
Lastly, through the kindness of Messrs. Elliott and Mr. Casella, I obtained the loan 
of some meteorological instruments. Messrs. Elliott lent me one of their excellent 
aneroid barometers. Mr. Casella lent me a marine barometer and a standard thermo- 
meter, both verified at Kew, the readings of which were used in the reductions of the 
astronomical observations. 
The apparatus was sent to Plymouth on the 5th of July, whence we set sail on the 7th; 
on the 9th we reached our destination. Mr. Vignoles met the ‘ Himalaya ’ in a small 
steamer which he had chartered to convey ashore the astronomers who intended to land 
at Bilbao, with their apparatus and luggage ; but I am placed under a further obligation 
to him, not only for his kind and liberal hospitality during my stay at Bilbao, but also 
for dispatching my apparatus, as soon as it was landed, to Rivabellosa, which is situated 
at a distance of seventy miles from the port of Bilbao, and is only accessible through a 
pass difficult for the transmission of heavy baggage. 
On the evening of the 10th we left Bilbao in a diligence which I had engaged to 
convey my party to Rivabellosa, at which place we arrived on the next day, after a 
journey very trying to our chronometers. 
