Prof. H. HAGA and Prof, F, M. JAEGER: “Rontgenpatterns of Tetragonal Crystals”. Plate IV. 
cr 
Fig. 1 
Fig. 2 Fig. 3. EE Fig 5 ; 
sphical Projection of the Réntgen-pattern of Stereographical Projection of the Rontgen-pattern of Stereographical Projection of the Röntgen-patternof __ Stereographical Projection of the Röntgen-pattern of Stereographical Projection of het Röntgen-pattern of 
“Rutile. Plate parallel to (001). * Cassiterite. Plate parallel to (001). Cassiterite. Plate parallel to (100). Cassiterite. Plate parallel to (110). inact, Erythrite. Plate parallel to (001), 
ae 
. 
} ir EN 
Fig. 6 Fig. 7. Fig. 8 . Fig. 9. , Fig. 10. 
Stereographical Projection of the Réntgen-pattern of Stereographical Projection of the Röntgen-pattern of  Stereographical Projection of the Röntgen-patternof  Stereographical Projection of the Ron| Stereographical Projection of the Röntgen-pattern of 
inact, Erythrite, Plate parallel {100}, (Schematical) Scheelite. Plate parallel to (001), Scheelite, Plate parallel to (001). Scheelite, Plate parallel (110). 
Nickelsulphate (6H,0) Plate parallel to (001). 
Fig. Ul Fig. 12, Fig. 13. Fig. 14, 
Stercographical Projection of the Rontgen-patternof  Stereographical Projection of the Rontgen-pattern of Stereographical Projection of the Röntgen-pattern of Stereographical Projection of the Röntgen-patternof ___Stereographical Projection of the Rintgen-pattern of 
Nickelselenate (6H,0), Plate parallel Joon, Nickelselenate (6H,O). Plate parallel to (110), 
Potassiumdihydrophosphate. Plate parallel to (001). Potassiumdihydrophosphate. Plate parallel to (100). Potassiumdihydrophosphate. Plate parallel to (110) 
Fig. 16, Fig. 17. Fig. 18. Fig. 19. 
Stereographical Projection of the Röntgen-patternof __ Stereographical Projection of the ROntgen-pattern of  Stereographical Projection of the ROntgen-pattern of _ Stereographical Projection of het Röntgen-pattern of 
Wi nite. Plate parallel to (001), Penta-erythrite, Plate parallel to (001). Strychnine-sulphate. Plate parallel to (001), 
dextro- and laevogyratory Triethylene-diamine- 
Cobaltic-bromide. Plate parallel to {001{. (Approx) 
Proceed. of the Acad. of Sc'ences Amsterdam. Vol, XVIII. 1915/16. 
