66 



STATE HORTICULTURAL SOCIETY. 



lion made up according to the formula A and 15.54% according to the 



formula B while lime sam]>le No. 2 containing 90.4% calcium oxide 



gave 24.(51 '/(. accoiding to formula A and 21.08'/ according to formula 



15. Al.«o the 8am])le made fi'oni the lime containing the greatest amount 



of magnesium oxide has the snuillest amount of sulphur in solution. In 



other Avords the greater the amount of magnesium oxide in the lime used 



the smaller will be the jier cent of sulishur in solution. 



Now in order to show just how llie magnesium oxide in the lime affects 



the strength of the solution we took three samples of lime shown in the 



table immediatelv below where the magnesium oxide varied from 1 up 



to 25.5%. 



Table III. • 



Branrl. 



1. Kelly It-laud Lime. 



2. Bay Sliore Superior. 



;?. J. T. Bal<er Chemical Co. (from marble) . 



Calcium Oxide. 



% 

 74.4 



SG.S 



S9.0 



Masue.sium 

 Oxide. 



% 

 22.5 



10.2 



1.0 



Solutions were made u}) using these limes according to the formula, 

 100 grams lime 200 grams sulphur and 800 grams water. This gives 

 the same proportions as the 50-100-50 formula and is designated by the 

 letter A in table IV. In the solutions designated by the letter B the 

 amount of linie was increased sufticiently so that there should be exactly 

 100 gi'aniis of calcium oxide in each case. Thesolutions were made in small 

 quantities in the laboratory and the amount of water was kept con- 

 stant during the boiling. If you will compare IB and 2B and 3B where 

 we used exactly the same amount of calcium oxide, the same amount 

 of sulphur and the same amount of water you will see that the amount 

 of sulphur in solution varies only from 18.40 to 18.60%. So when 

 we can control the conditions and Ave have exactly the same amount 

 of calcium oxide and sulphur Ave can get very closely the same result. 



Table IV. 



