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Carefully open package No. 2 (containing bacteria) and drop 

 the inclosed cotton into the solution. Cover the tub with a paper 

 to protect from dust, and set aside in a warm place for twenty-four 

 hours. Do not heat the solution or you will kill the bacteria — it 

 should never be warmer than blood-heat. 



After twenty-four hours add the contents of package No. 3 (con- 

 taining ammonium phosphate.) Within twenty hours more the 

 solution will have a cloudy appearance and is ready for use. 



To Inoculate Seed : 



Take just enough of the solution to thoroughly moisten the seed. 

 Stir thoroughly so that all the seeds are touched by the solution. 

 Spread out the seeds in a shady place until they are perfectly dry, 

 and plant at the usual time just as you would untreated seed. The 

 dry cultures as sent from the laboratory will keep for several 

 months. Do not prepare the liquid culture more than two or three 

 days previous to the time when the seeds are to be treated, as 

 the solution once made up must usually be used at the end of 

 forty-eight hours. 



To Inoculate Soils : 



Take enough dry earth so that the solution will merely moisten 

 it. Mix thoroughly, so that all the particles of soil are moistened. 

 Thoroughly mix this earth with four or five times as much, say 

 half a waggon-load. Spread this inoculated soil thinly and evenly 

 over the field exactly as if spreading fertilizer. This should be 

 done just before ploughing, or else the inoculated soil should be 

 harrowed in immediately. 



Either of the above methods may be used, as may be most 

 convenient. 



Enough germs are sent in each little package to inoculate seeds 

 for from one to four acres. The package can be carried in your 

 pocket, and yet does more work than several cart-loads of fertilizer. 

 It costs the government less than four cents a cake, or less than a 

 cent an acre, and saves the farmer thirty or forty dollars, which 

 he would have to spend for an equal amount of fertilizer. Different 

 cultures are sent for different crops. 



The results have been surprising. If Malthus were living, he 

 would have to revise his calculations of the time when the world 

 will be so crammed with people that it cannot feed them. 



A comparison of the actual figures of yield of two crops grown 

 on exactly the same land, but one of inoculated and the other of 

 uninoculated seeds is quite startling. Two patches of hairy vetch 

 grown side by side under precisely the same conditions, yielded 

 crops as follows: uninoculated patch, 581 pounds; inoculated 

 patch 4,501 pounds an increase of more than eight times. Crimson 

 clover under similar conditions yielded : uninoculated, 372 pounds ; 

 inoculated 6,292 pounds — an increase of nearly twenty times. 



It does not require a trained scientist to apply the cultures. The 



