II. RESEARCH. 577 



13 boats formed of baked and fused fluorides. 

 6 fluoride of calcium. 



5 

 2 



1 it 

 1 



1 tube 

 1 crucible 



fluor-spar, 

 cryolite, 

 native graphite, 

 wood charcoal. 





 gas carbon. 



1 cup 



4 plates polished fluor-spar. 



All these articles for use in researches on the fluorides. (See Philosophical 

 Transactions of the Koyal Society, 1 869.) 



2419e. Three Specimens of Melted Silicon in bottle. 



George Gore, F.R.S. 



24:19f. Vessels and Articles of wood-charcoal, native gra- 

 phite, and gas carbon, used in researches on the Fluorides. 



George Gore, F.R. S. 



1 1 crucibles of wood charcoal, in bottle. 

 9 boats of native graphite, in box. 



2 rods of lignum vitse charcoal. 

 1 boat of gas carbon. 



Used in researches on the fluorides. (See Philosophical Transactions of 

 the Royal Society, 1869, &c.) 



241 9 g. Glass Vessel for collecting and Measuring Gases. 



George Gore, F.R.S. 

 2419h. Glass Beehive Shelf used in collecting Gases. 



George Gore, F.R.S. 



2419i. Specimens of Native Bock Salt from Jhelum, in 

 Cabul, Afghanistan ; Wiclicska, in Poland ; and Erfurt, in 

 Prussia. George Gore, F.R.S. 



2419k. Specimens of Native Iron. George Gore, F.R.S. 



24191. Specimens of Native Antimony. 



George Gore, F.R.S. 



2421. Pseudo-crystal of Native Ceylon Graphite. Bar of 



extremely pure metallic Tellurium, weighing 2,000 grains. 



George Gore, F.R.S. 



2431. Collection of Vanadium Compounds. 



Prof. H. E. Roscoe, F.R.S. 



1. Vanadium ore, containing 2 per cent, vanadium. 



2. Roasted vanadium ore. 



3. Ammonium meta-vanadate (3rd crystallization). 



4. Pure vanadium pentoxide, V 2 O 5 . 



5. Vanadium tetroxide ; V 2 O 4 . 



6. Vanadium trioxide, V 2 O 3 . 



7. Vanadium pentoxide, containing phosphorus. 

 40075. O O 



