Observers' Field Reports 



141 



Table 17 Concluded. 



No. 



Name 



Date 



Lat. North 



Long. East 



54 

 55 

 56 

 57 

 58 

 59 

 60 

 61 

 62 

 63 

 64 

 65 

 66 

 67 

 68 

 69 

 70 

 71 



72 

 73 



Baboko 



Bania 



Nola, A 



Nola, B 



Bayanga 



Bomassa 



Ouesso 



Moloundou . . . 



Ngoila 



Sembe 



Souanke 



Teisan 



Lomie 



Doumo 



Abong-Mbang 



Atok 



Akonotinga . . . 

 Olama 



Eseka 



Douala, B . . . . 



Dec. 



1919-20 

 Nov. 9 

 " 10-11 

 " 13-15 

 " 15-16 

 " 17 

 " 19 

 " 22 

 " 27-28 

 " 29 

 2-3 

 5 

 S 

 11-12 

 14 

 16 



17-18 

 20 

 31- 



1 

 15-16 

 20 



Jan. 



34.4 

 59.8 

 31.4 

 31.4 

 54.4 

 12.4 

 36.9 

 02.3 

 01.3 

 38.8 

 04.1 

 41.0 

 09.5 

 37.7 

 59.7 

 01.6 

 46.2 

 25.5 



39.1 



02.4 



16 08 



16 08 



16 04 



16 04 



16 16 



16 13 



16 04 



15 14 



14 55 



14 36 



14 09 



14 03 



13 41 



13 26 



13 12 



12 47 



12 15 



11 16 



10 47 



9 43 



The total time occupied in work was from May 3, 1919, to January 24, 1920, a total 

 of 267 days. With the 73 stations occupied, the average time for a station was 

 3.6 days. The total distance traveled in the field, exclusive of the sea trip from Liverpool 

 to Douala, was 3,561 miles. The average distance between stations is 49 miles. In 

 addition to the stations listed in the foregoing table, there were two stations occupied 

 en route from Liverpool to Douala. The total traveling expenses exclusive of the steamer 

 fare were $930, making the average cost per station about $13. Generally speaking, the 

 formation throughout the Cameroun is laterite. In the central portion the mountains 

 of the Ngaoundere district are of granite gneiss, while further to the west, the mountain- 

 ous country extending from Mount Cameroun on the coast, northeastward along the 

 Nigerian frontier, is basaltic. Granite and quartz outcrops often occur in the laterite 

 formation. The soil generally is a reddish clay. The exception to the foregoing remarks 

 occurs in the extreme north where the Cameroun territory tapers to a point at Lake 

 Tchad, and where the Mandara Mountains, with their fantastic reddish pinnacles and 

 crags, push northward as far as latitude 11 20', and then abruptly end. Their northern 

 extremity is surrounded by a great plain, inundated in the wet season and partly desert 

 for the remainder of the year, on which the soil is a hard sandy clay with no rocks or 

 pebbles. This same formation is found on the Logone River from Fort Lamy to Lai, 

 but at the latter place the laterite reappears. Cameroun Mountain on the coast is a 

 mass of basalt 4,000 meters high and seems to be a semi-active volcano. The southern 

 and central parts of the Cameroun are subject to occasional earth shocks which last from 

 one to several seconds. At the government post of Bouar, a distinct shock was recorded 

 in March 1919, while Cameroun Mountain was active in 1917. Gold in small quantities 

 is found in the mountainous region of the central part, where mineral springs also occur. 



Although the soil is ferruginous, very few places showed a pronounced local dis- 

 turbance. In some regions the natives smelt laterite rock to obtain iron for their spear 

 heads and knives, but the ore is obtained from special spots which were always too far 

 from the road for me to visit. The observations at Lum on the railway from Douala 

 to Nkongsamba indicate a large local disturbance, and tend to strengthen a belief in the 

 existence of a high-grade iron ore in that district. The upper Sanga Valley from Carnot 

 to Nola appears to be magnetically disturbed. 



