Prof. Dr. F. M. JAEGER: „On a New Phenomenon accompanying the Diffraction of Röntgen-rays in birefringent Crystals.” Plate IV. 
i i i jecti i i i he Fig. 9. Stereographical Projection of the Röntgen- Fig. 10. Stereographical Projection of the Rontgen- Fig. 13 
3 e Fig. 2. Stereographical Projection of the Fig. 5, Stereographical Projectian of the Fig. 6, Stereographical Projection of t 1 
Re ie Benet ike Rontgen-paltern of ieee Minnariand Rontgen-pattern of dextrogyratory Cinnabar. 2 Rontgen-pattern of dextrogyratory Sodium pattern of Hambergite. Plate parallel to (100). pattern of Hambergite. Plate parallel to (010). 
intgen-patte A 3 
si CEpeHOteHar to the c-axis, Alum. Crystalplate parallel to (111). Plate parallel to (0001).) ee yi | Ammonium-Tartrate. Plate parallel to (100) 
Stereographical Projection of the Rontgen- 
pattern of Benitoite. Plate parallel to (TTO). 
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/ 
| / 
\ 
Fig. 3. Stereographical Projection of the Fig. 4. Stereographical Projection of the Fig. 7. Stereographical Projection of the Fig. 8 Stereographical Projection of the Fig. Il. Stereographical Projection of the Rontgen- Fig. 12. Stereographical Projection of the Rontgen- Fig. 14. Stereographical Projection of the Röntgen- 
Rontgen-pattern of Potassium-Chromic= Rontgen-pattern of Turmatine. Plate per- Röntgen-pattern of dextrogyratory Sodium- Rontgen-pattern of dextrogyratory Sodium rattern of Hambergite. Plate perpendicular to the c axis. pattern of Henitoite. Plate parallel to (1010), pattern of Benitoite, Plate perpendicular to the c-axis. 
Alum. Plate parallel to (111), pendicular to the c-axis. Ammonium-Tartrate, Plate parallel to (010), Ammonium-Tartrate, Plate parallel to (001). 
