GEOLOGICAL SURVEY OF INDIA. 
Memoirs, Vol. XXXVII, PI. 5. 
Photo, by H. H. VV, Gairick. 
Fig. l.-STALACTITIC PSILOMELANE FROM GARBHAM, 
VIZAGAPATAM DISTRICT, MADRAS. ■ NATURAL SIZE. 
From a Sepia Sketch. Calcutta Phototype Co. 
Fig. 2. — RENIFORM PSILOMELANE FROM GARBHAM, 
VIZAGAPATAM DISTRICT, MADRAS. \ NATURAL SIZE. 
