41. The hindwings are slaty -grey. 42. The rest of the upperparts are slaty black, and the tail is black with white edges. 43. The dark morph Rough-leg is more a slaty coloration than the more brownish dark morph ferruginous. 44. White-eyed slaty flycatchers are frequently spotted either hawking for insects or taking them from the ground. 45. The forewings are glossy light or dark violet-slaty grey with the extreme costal edge ochreous whitish. 46. By 20 days, the young slaty -breasted tinamou has gained adult size, though not adult weight. 47. Sedgwick investigated the phenomena of metamorphism and concretion, and was the first to distinguish clearly between slaty cleavage. 48. The slaty -headed parakeet ( " Psittacula himalayana " ) generally does not learn to talk. 49. The northern slaty antshrike is found in north-eastern South America in Brazil, Venezuela and the Guianas. 50. The dark slaty shales may have the necessary school slates used by students in 19th-century rural schools.
