INSTRUMENTS. 



3 



6 Surveying chains. 



6 Barlow's compensating plates. 



1 Amici collamator. 



MAGNETIC INSTRUMENTS. 



1 Variation apparatus, by Gambey. 



1 Variation apparatus, by Dolland. 



1 Gauss's diurnal variation. Troughton and Simms. 



1 Diurnal variation. Gambey. 



1 Diurnal variation. Dolland. 



2 Dipping needles, six inches, by Robinson. 



2 Dipping needles, twelve inches, by Gambey. 



2 Dipping needles, six inches. Dolland. 



3 Intensity needles. Gambey. 

 2 Intensity needles. Dolland. 



METEOROLOGICAL AND PHYSICAL INSTRUMENTS. 



2 Standard barometers. Troughton and Simms. 

 6 Mountain barometers, with extra tubes. 



1 Iron cistern. Jones. 



2 Sympiesometers. Adie. 

 6 Daniell's hygrometers. 



2 Pouillet's hygrometers, a capsule. 



9 Standard thermometers, by Simms, Jones, and Dolland. 

 16 Six's self-registering thermometers, with copper cylinders for 

 deep sea soundings. 



2 Scopeloscopes. 



3 Pluviometers. 



1 Brass convertible axis experimental pendulum, by Jones. 

 1 Iron convertible axis experimental pendulum, by Jones. 

 1 Eight day astronomical clock, mercurial pendulum. Molyneux. 

 1 Eight day clock, steel bar pendulum, for pendulum experiments. 

 Molyneux. 



1 Journeyman clock. Molyneux. 



Iron frame to support the agate planes and its fixtures ; also clock 

 frames and stands. Molyneux. 



