ee eit NC BORO eee in)” Note nam A Nie ny ar oy ved ie tel 
L. Waldo—Papers on Thermometry. 443 
unconsolidated material of the surface. Fissures and faults 
° 
ot 
a 
® 
mn 
=I 
5 
9 
ct 
5 
e) 
nm 
r 
a 
© 
— 
a) 
° 
e) 
ra 
pe) 
5B 
bar) 
— 
< 
o 
a 
eb) 
o 
_— 
o 
oO 
g9 
i=} 
ro 
er 
on 
o 
*o 
ber J 
® 
mM 
® 
5 
or 
stone outcrops in Harlem, between 3d and 4th and 5th and 6th 
Avenues, must make his excursion soon. 
[To be continued. | 
Art. LV.—Papers on Thermometry from the Winchester Observ- 
atory of Yale College; by LEONARD WALDO. 
[Continued from page 226. ] 
For the comparison of standard thermometers the observa- 
tory has had constructed by J. and H. J. Green, of New York, 
a water comparator which consists essentially of an outer and 
the water is thoroughly agitated by the plunger, which is 
vent radiation from or to the base of the cylinders by a mat 
which can be brought close against the base when the Bunsen 
