203 



Chaudiere, being the most valuable. The discovery of alluvial gold 

 on the Chaudiere was made many years ago, but the discovery 

 of veins of quartz in places bearing gold nuggets is a very recent dis- 

 covery, and is due to the French habitans, who have for a long time 

 obtained gold from the borders of the Chaudiere and La Famine 

 Rivers by washing the gravel and sand. 



The following mines of copper ores have been examined: — 1, 

 Acton; 2, Halifax; 3, Wickham; 4, Durham; 5, Black River; 6, 

 Sutton; 7, Canada; 8, Chaudiere; 9, Prince of Wales; 10, Sti Fran- 

 cis; 11, Megantic ; 12, Harvey Hill. Some of these mines are suiR- 

 ciently well proved to warrant the belief that they will become 

 profitable to the owners ; others have got to be proved by mining 

 explorations. 



These mines stretch along a belt from fifteen to twenty miles wide, 

 extending from near Memphremagog Lake to near Quebec. 



Prof. Jeffries Wyman made the following 

 Obsekvations on the Cranium of a young Gorilla. 



Through the kindness of Mr. P. B. Du Chaillu, I have been able to 

 examine the cranium of a Gorilla, younger than any of which 

 a description has thus far been given, and in which only the decidu- 

 ous incisors and first milk molars were protruded. This has been 

 compared with the cranium of a young Chimpanzee, in which all the 

 milk teeth were developed, and with a second In which only the mid- 

 dle incisors had pierced the gums. 



Between the crania of the young Chimpanzee and Gorilla, there is 

 only a trace of those great differences which exist in the adults, especial- 

 ly in the surfaces of the bones to which the muscles of the lower jaw 

 are attached, and on which the characters of the two species so largely 

 depend. Leaving out of view for the present the bones of the face, 

 the cranium of the young Gorilla, here noticed, is of about the same 

 size as that of a Chimpanzee, In which the first set of teeth Is 

 complete. The crania of both are well rounded on the borders of 

 the different regions ; the sutures and the large cranial bones are of 

 about the same relative size in both. When viewed from above, the 

 zygomatic arches, which are of nearly the same size and strength in 

 both, are In each concealed by the projecting sides of the cranial walls ; 

 the slight ridge on the side of the cranium which marks the origin of 

 the temporal muscle has nearly the same relative extent in both as in 

 man, and is In strong contrast with the subsequent position of it in 

 adults, where it reaches nearly to the median line on the top of the 

 head in the Chimpanzee, and to the high parietal and occipital crests 

 in the Goi-IUa. The coronal region is more flattened in the Gorilla, 



