]6 



THE CUBA REVIEW 



tion is of no value; as a matter of fact it is in many instances harmful. I am told nitrogen 

 is the material to make tobacco grow, but that does not mean that it is the only thing. I found 

 the nitrogen increased the nicotine content in the leaf, and it is well known that nitrogen alone 

 produces an abnormally rank growth and a coarse watery texture. 



Phosphoric acid has never played much of a role in tobacco growing, because the plant 

 needs but a small amount of it. 



My reports show that a large amount of phosphoric acid in the soil causes the plant to 

 take up more of it than is necessary, causing a poorer burning and a dark ash. 



Potash has always been reported to be the most necessary element because more potash 

 was found in the leaf than other elements, but the statement made regarding the amount of 

 potash actually necessary and the most desirable form in which to apply it were often mislead- 

 ing, because the influence of potash was not fully known. It has been claimed by some that 

 silicate of potash was the only really desirable form, which claim has not been substantiated 

 by later exi3eriments. 



Tobacco Farm, Pinar del Rio. 



FOURTH LIBERTY LOAN 

 The critical period of the war is at hand. 

 The Huns have given signs of reaching a 

 point where a series of intensive drives will 

 weaken for all time their war lust, their 

 Prussian spirit. 



It has been possible to bring the res- 

 cue of civilization to this stage only through 

 Liberty Loans. The people lend their money 

 to the government that the government, in 

 turn, may mobilize men and material re- 

 sources. No mere figures can give the human 

 mind any real conception of the staggering 

 cost of the war. The AUies, as well as our 

 own boys in France, look to America for 



means with which to continue the war — to 

 win the war. 



The Fourth Liberty Loan will enable the 

 fighters for civilization to begin the great 

 drives which are to save the world from insane 

 and biutal Hun domination. It will be a test 

 of the patriotism of the nation^ a test which 

 will be watched by the Kaiser and his creat- 

 ures just as closely as by loyal Americans. 



For the function of the Fourth Liberty 

 Loan is two-fold, just as the function of all 

 Liberty Loans is two-fold — to make effective 

 the forces of civilization and to teach the 

 Kaiser that this "contemptible nation" is 

 responding to the call of patriotism. 



