Recently published Ornithological Works. 185 



there are differences of opinion among ornithologists as to 

 the validity of both these species, and discusses them at full 

 length. He then devotes several pages to a disquisition on 

 the cause of these and other visitants coming from remote 

 parts of the earth's surface, and how far their migrations 

 may he influenced by the rotatory motion of the earth. 



15. Neave on the Birds of North-east Rhodesia. 



[(1) A Journey to North-east Rhodesia during 1904 and 1905. By 

 S. A. Neave. Mem. Manch. Phil. Soc. vol. 51, pt. 2. Manchester, 

 1907. 



(2) On a Collection of Birds from X.E. Rhodesia. By S. A. Neave. 

 Mem. Manch. Phil. Soc. vol. 51, pt. 3. Manchester, 1907.] 



We have already called attention (see ' Ibis/ 1906, p. 740, 

 and 1907, p. 223) to Mr. Neave's travels in North-eastern 

 Hhodesia in 1904-5 as Naturalist to the African Geodetic 

 Survey. The first of these papers gives us an exact account 

 ot his routes in Khodesia, and the second the results of his 

 researches, so far as regards the Class of Birds. 



Mr. Neave's winter-quarters during the rains of 1904-5 

 were at Petauke, the Chartered Company's most western 

 station in the East Loangwa district, which is called a 

 " charming spot.'" At other times Mr. Neave seems to 

 have traversed the greater part of the southern half of 

 North-eastern Rhodesia, though there is no map attached 

 to his report to shew his exact routes, and many of his 

 localities are not to be found in any Atlas. The great feature 

 of this part of Rhodesia is the enormous valley of the 

 Loangwa, one of the principal affluents of the Zambesi, 

 which traverses the whole Province from N.E. to S.W. 

 Mr. Neave describes tlie " three rather distinct types of 

 country " met with as follows : — 



'•' (1) The low country up to 3000 feet, such as is found 

 in the valley of the Loangwa and of the Zambesi at the 

 point where the former river joins it. This is characterized 

 by patches of typically tropical vegetation ; by areas of more 

 or less dense thorn scrub ; by sandy flats covered with 

 ' Copaifers mopani' trees, varied by small open spaces, but 

 remarkable for the absence of undergrowth. 



