200 Scientific Intelligence.^— Geology. 



sure. The abrupt manner in which this extensive bed of petri- 

 fied wood terminates is not one of its least singularities, and, al- 

 together, it is perhaps one of the most curious facts of the kind 

 yet discovered." G. H. W. 



6. Geognostical and Geographical Distributiwi of Minerals. 

 — Although it is a well-known but little regarded fact, the 

 occurrence of one and the same crystalline form of a mineral 

 in particular localities, it is also equally interesting that widely 

 distant places exhibit the greatest agreement in their exterior 

 and in their mineral contents. The latter is found to be the 

 case, when we compare together the minerals of North America 

 with the same species in Scandinavia, particularly of Norway 

 and Finland. The same is the case with other districts. Thus 

 there is not only a striking agreement between the varieties of 

 gneiss in the Bohmerwald and those of Scandinavia, but also in 

 the subordinate beds, veins, and imbedded masses of granite, 

 and the same imbedded minerals occur in these distant coun- 

 tries. The red and green garnets, and black augite and cocco- 

 lite of Norway occur again in the boundary between Moravia and 

 Bohemia ; but, in the eastern half of the Bohmerivald, there oc- 

 cur albite, triphane, petalite, tantalite, &c. The garnet, epi- 

 dite, and hornblende of Schriesheim, in the Bergstrasse, often 

 shew a striking resemblance to those of Arendal ; and the wer- 

 nerite, coccolite, colophonite, garnet, chondrodite, green spinel, 

 triphane, petalite, black tourmaline, hornblende, &c. of Massa- 

 chussets in North America, strikingly resemble the same mine- 

 rals found at Arendal, Eger, and other places in Norway, and 

 from Hermala, Pargas, and Ersby in Finland. 



STATISTICS. 



7. Glasgow Statistics^ 1831. — Population, Births, Marriages, 

 and Burials. — In 1821, the population was 147,043. In 1831, 

 ^02,426, viz. males 93,724, females 108,702 ; increase in ten 

 years 55,383 souls. There are 137 occupations narrated, with 

 the number of individuals employed in each. Ages under 5, 

 30,277; 5 to 10, 25,707 ; 10 to 15, 21,211 ; 15 to 20, 20,745; 

 SO to 30, 38,185 ; 30 to 40, 26,419 ; 40 to 50, 18,014 ; 50 to 

 60, 11,648 ; 60 to 70, 6,920 ; 70 to 80, 2,592 ; 80 to 90, 645 ; 

 90 to 100, 58 ; 100 and upwards, 5, viz, 1 male, 4 females. - 



