144 Miscellaneous Intelligence. 
“ When we calculated our observations, we were not a little surprised ne 
to find that we had reached the summit of Chimborazo without being — 
aware of it. According to personal researches, made at first in the Ar 
chipelago of Hawaii, = der knags cree among the Cordilleras of — 
the equator, the co-efficient of the sum of degrees or fractions of de- 
gree in the centigrade dees reckoning between the point 
the mercury rises when the instrument is immersed in boiling 
the boiling point of water at the level of the sea, is found to 
that is to say, each degree below 100 indicates a difference of les 
to 290°8 iaaiage. or about 29 meters for the tenih of a degree, hence the My 
formula a 
z= (100 —B) (290°8) . 
which gives us 6543 meters for the absolute vertical height we had reached 
on Chimborazo. is figure places us quite on the s summit, the altita 
of which, above the ee level, according to Humboldt’s triangulations 
6544 metres. But whatever degree of confidence may be cone 
our ome the nish ser aoa fact resulting from our ascent is, that 
veo summit of Chimborazo is access 
eep it a secret, but sufficient was communicated to show that the eyam 
bath,.which is not only expensive but dangerous, can be dispensed will 
and that the present system, according to which there is a great waste 
to induce the ea of the copper is not stated. The last branch = ‘ 
pa rs. Christote and Bouillet’s process for strengthen@ 
electrotypes, the pri iaeipe of which is to leave an opening in the back 
the thin electroty pe obtained precipitating, and to put into it variol 
little pieces of brass, which, on being melted with an oxyhydrogen | 
become diffused all over the elon surface of the copper without 1) 
ing it in any way, and thereby impart to it the strength of cast-iron. 
On a new method of Refining Sugar ; by Dr. Daveeny, (P 
Brit. Assoc., from Edin, N, Phil. Mag. vi, 304 oes Davee? a 
Mr Oxland, and known by his ‘n name. It consists in the depHiot of 
uperphosphate of — in conjunction with animal ee tual a 
n 
ach and adulterate the pure seichasin: principle present in the 
expressed from the cane or other yegetable which supplies it. As, b 
