April — sept. 1859.] the Province of Auckland. 133 



such works, the value of the coal would be made apparent to 

 everybody, and the manufacture itself, if properly conducted, can- 

 not fail to be remunerative. It may be interesting to you to know 

 that the far-farmed " Bohemian Porcelain" is burnt by means of 

 brown coal, from a seam of, in some places of 90 feet thickness. 

 While stating the uses to which brown coal may be applied, I must 

 warn you against thinking that it is suitable for steamers having to 

 make long sea voyages. The bulky nature of the " brown coal" 

 will always prevent such steamers taking it on board when they 

 can procure " black coal." (*But on the other hand, its qualities 

 as a gas-producing coal, as the above analysis show, will render it 

 valuable as an article of export.*) 



I now come to another series of the older Tertiary strata, ex- 

 amples of which are found occurring in great regularity on the West 

 Coast from Waikato to Kawhia. The lowest are argillaceous — 

 the middle calcareous, the upper arenaceous. 



The characteristics of the first clayey strata are, a light grey co- 

 lour, very few fossils, small crystals of iron pyrites and glauconitic 



Feet. Inches. 



9) 2. 0 



10) 1. 0 



11) 5. 0 



12) 2. 0 



13) 5. 2 



14) 5. 6 



69. 8 



1) 1. 0 



2) 7. 0 



3) 6. 6 



4) 7. 0 



5) 1. 4 



6) 8. 0 



7) 5. 0 



8) 4. 0 



9) 10. 0 



10) 4. 6 



11) 9. 6 



63. 10. 



* Of these I would draw attention to No. I., 2 for common pottery, 

 No. I., 6 and 8 for finer stoneware, No. I., 7 for fire bricks! The vari- 

 ous coloured clays, No. II., 2 to 9, will be applicable to every kind of 

 pottery. No. II., 8, may be used as a colour of pigment in the same 

 way as ochre and umber are generally used. 



Greenish clay. 

 Dark grey clay. 

 Bluish grey clay. 

 Sandy clay. 



Volcanic ashes and gravel. 

 Hard basaltic rock. 



Boring No. II. 

 Dark soil. 

 Yellow clay. 

 White clay. 

 Yellow and red clay. 

 Brown clay. 

 Yellow clay. 

 Brown. 

 Reddish. 

 Brown. 



Gravel and Volcanic ashes. 

 Hard basaltic rocks. 



