42 



Class XXVH Physical Geography. 



From the best authority 



PER SLIDE, $2.50. 



1 Forms of Snow Crystals. 



2 Glacier in Western Norway. 



3 Niagara. 



4 Great Fall Yosemite. 



5 Canon. 



G Coral Reef. 



7 \Vater Spout. 



8 Group of Palms. 



9 African Scene. 



10 Tropical Vegetation. 



11 Banian Tree. 



12 Varieties and Distribution of 



Man. 



ILLUSTRATIONS TO HUMBOLDT'S 

 COSMOS. 



13 Aurora Borealis. 



14 Midnight Sun at the North Cape. 



15 Plutonic Rocks, Hartz Mountains, 



Germany. 



16 Plutonic Bocks. Rock laby- 



rinths, near Baden. 



17 Primary Rocks. Burning Moun- 



tain, near Duttwelles. 



18 Primary Rocks. The Lurley 



Rock, on the Rhine. 



19 Volcanic Rocks. Isola della 



Frizza. 



20 Secondary Rocks. The Rock of 



Gibraltar. 



21 Secondary Rocks. Chalk Moun- 



tains in Dorsetshire. 



22 Secondary Rocks. The Biel- 



grund, near Dresden. 



23 Tertiary Rocks. Tivoli. 



24 Alluvial and Diluvial Deposits. 



The Valley of the Nile. 



Class XXVin Astronomy. 



FORTY-ONE PAINTINGS, ON TWELVE 

 LONG SLIDES. 



PER SET, $25.00. 

 Packed in a box, with descriptive book. 



1 The Earth's Rotundity (lever 



movable). 



2 New Moon. 



3 New Moon. First Quarter. 



4 Full Moon. 



5 The Moon's Phases. 



G Telescopic View of the Sun. 



7 Telescopic View of Mercury. 



8 Telescopic View of Venus. 



9 The Earth and Moon. 



10 Telescopic View of Marc. 



11 Telescopic View of Vesta, Juno, 



Ceres and Pallas. 



12 Telescopic View of Jupiter and 



his Moons. 



13 Telescopic View of Saturn and 



his Moons. 



14 Telescopic View of Saturn with 



rings edgewise and his Moons. 



15 Telescopic View of Uranus and 



his Moons. 



16 Orbit of a Comet. 



17 Comet of 1819. 



18 Comet of 1811. 



19 Comet of 1860. 



20 Solar System of Ptolemy. 



21 Solar System of Copernicus. 



