35 



present, the chemical composition of the preparation, even in the 

 register of trademarks in the Department of Agriculture, Com- 

 mence and Labor, Office of Trademarks and Patents. 



The Piresident of the Provincial Council of Camagiiey cert- 

 ifies in the following forfa the work realized by the Senor Cassi : 



The undersigned, members of the Provincial Council of Cama- 

 giiey, hereby certify: 



That we have been present at an experiment made by Sr. Emi- 

 lio Cassi and Papini, upon the application of a liquid substance to 

 exterminate or kill the plant called Marabu, having been able to 

 observe a satisfactory result when there was used a proportion of 

 the said liquid of one bottle dissolved in 5 or 10 parts of water. 



And at the request of the said Sr. Cassi, we issue this certificate 

 in Camagiiey, on the 30th of May, 1914. 



(S.) Florencio Simancas, Pedro Juarez R., Ricardo Ortega. (Seal 

 of the Presidency of the Secretary). 



Sr. Jose Leon Almanca, living on the farm "San Bias" 

 •in Camagiiey, states in the following terms : 



Sr. Emilio Cassi: — Camagiiey, My Dear Sir. — I take pleasure 

 in informing you I have experimented with your liquid for destroying 

 Marabu, and can say that I have used it in the proportion of 11 parts 

 of water to one of the liquid, and the result has been excellent. All 

 the plants of Marabu which I treated, and I can say that the treatment 

 was not very great, but in three days all the plants were dead. Six 

 days afterwards I examined the roots of some of them and I have 

 found them in a real state of decomposition, some with the bark fal- 

 len away. In view of this experience, I believe the liquid is better 

 than crude petroleum. 



This laudatory communication for the treatment of Sr. Cassi 

 indicates the proportion of 11 parts of water to one of liquid, 

 which shows again the difference of opinion regarding the pro- 

 portion of the product to be employed. 



,Prom the preceding paragraphs it is seen that the Sr. Cassi 

 has been occupying himself with the problem of the destruction 

 of the Marabu in the field, employing different means and carry- 

 ing out a series of experiments almost all of which were satis- 

 f axjtory, which demonstrates that he may be in the road to discover 

 a real eiLemy of this plant, for which reason we believe it de- 

 siderable that the said gentleman present a detailed account of 

 the products employed, the priority of any discovery being safe- 



sruarded for him. 



The foregoing is what I have to report oh this subject. 



Very respectfully yours, 



(S) Mario Sanchez Eoig. 

 Havana, Oct. 17t!h, 1916. 



