suggested to be used. As to the great quantity of suulphate of 

 iron the night-men will not use more than they can help ; they 

 make it last six months if they can. The quantity used is very 

 small ] so much so, that in applying 4 cwt. to the acre the quantity 

 of sulphate of iron would not be more than 5 or 6 fts. The 

 quantity satisfactory is 7 lt)S per ton of the original material. It 

 has been found that in all grain crops the application of sulphate 

 of iron is very advantageous, and the smaller quantity should 

 certaiidy not have any deleterious effect. When tirst this poudrette 

 manufacture was started their trouble was in getting a great deal 

 of sand. The sand got in there, and the result was the poudrette 

 manufactured was poor quality, but lately the materials supplied 

 to the work have been of superior quality, and so better poudrette 



Mr. T. B. Trebeck— I can concur with Mr. Dixon's remark 

 about sulphate of iron. I have several times lately read that it is 

 very valuable manure. 



Mr. Henry Deane— In reference to the conclusions come to 

 by Mr. Moore, it would I think be very desirable to know wliat 

 process the poudrette he experimented upon had undei-gone. 

 Whether it had actually undergone the process of roastiiig, or 

 whether it had been produced under the temperature mentioned 

 by Dr. Thompson, 300 degrees Fahrenheit. 



Mr. Moore — I cannot say what process it underwent before it 



and I asked my overseer to watch it, and it is quite possible that 

 although it had no effect on the barley it might ha^■e h.id somo 

 effect on other vegetables, and perhaps growing plants —radish(^s, 

 it might have had an effect upon different plants. But when my 

 attention was called to the ground not more tliaii a ^\-eek ago J 

 could not see any perceptible difference. 



The President— There is one matter stated in the discussion 

 I should like to draw attention to. I think Mr. IMoore snid that 

 there were no bad effects felt in any way from a large quantity of 

 putrescent or more or less decaving matter deposited in Wentworth 

 Park and that men, women and children were wallowing in it and 

 suffered no harm. That may be, and no doubt is perfectly true 

 in this particular case. Still it is not a desirable state of thlngs^ 

 There was no harm done in this particular instance, because I 

 suppose disease germs happened to l)e absent or m an inactive 

 condition. In Sydney some years ago the wjiter was \('ry much 

 contaminated by the contents of the soil pans, and it so happened 

 I had to examine into this matter, and one of the arguments 

 brought forward against my report was it could not have been so 

 bad otherwise there would have been some sickness, but my reply 

 was that the f cecal matter happened to be healthy. If it had been 



