32'd 



7. White Elm (U/mus americana). 



Tree sound. Diameter three feet from the base, 28 inches; ditto fourteen feet from the base, 25k inches. 

 Mean thickness of the bark, J inch. Whole length of the tree, 111 feet. Number of layers fourteen 

 feet from the base, 208. Average thickness of each layer, 0-05769 of an inch. Thickness of layers 

 quite uniform. From 80 to 8.5 outside layers taken for outside wood; the remaining layers, for inside 

 wood. 



First Specimen. 





Bark of trunk. 



Outside woo 



Potash 



3-79 





Soda 



1-65 





Chloride of sodium - 



trace. 





Sulphuric acid 



0-14 



12 02 



Carbonic acid 



39-44 





Lime ... 



27-46 





Magnesia 



13-10 





Phosphate of peroxide of 



iron, \ 





Phosphate of lime 



- } 3-40 





Phosphate of magnesia 



. ) 





Organic matter 



2-00 





Insoluble silica 



1-75 





Coal 







Moisture ... 



3- 10 





rk of twigs. 



Wood of twigs 



5-82 



9-61 



6-53 



18-41 



0-07 





2-80 



3-98 



24-72 



26-07 



16-92 



14-77 



3-00 



2-40 



85-86 



12-02 



24-50 



1-50 



95-82 



22-35 



0-50 

 0-30 



97-49 



Second Specimen. 



Potash .... 



Soda .... 



Chlorine ... 



Sulphuric acid 



Phosphate of peroxide of iron. 



Phosphate of lime 



Phosphate of magnesia 



Carbonic acid 



Lime .... 



Magnesia 



Silica .... 



Soluble silica ... 



Organic matter 



Sap wood. 



15-85 

 7-64 

 0-74 

 0-12 

 1-82 



| 14-53 



29-51 

 20-08 

 4-72 



2-00 



1-45 



Heart wood 



S-64 

 20-49 

 0-09 

 0-14 

 1-05 



2-75 



28-225 



22-635 



10-08 



3-25 



1-S0 



Outside bark 



5-32 

 3-22 



1-21 

 0-10 

 4-00 



19-55 



1326 



30-26 



4-84 



12-15 



1-60 



4-12 



Inside bark 



1-17 

 2-17 

 05 

 0-04 



3-775 



42-515 



42-495 



8-16 



1-25 



0-40 



98-46 S. 99-115 S. 99-59 S. 102-025 S. 



