54 THE EEPOPtT OF THE No. 36 



This stock solution was also used in the proportions of 1 to 8, 1 to 4, and 

 1 to 2, both with and without oil of citronella. As with the iirst stock solution 

 the repellent action was such that^considering the cost the mixture could not be 

 looked on as of practical value. 



VI. Milk EiMULsiox, Olive Oil and Lixseed Oil: 

 1 part slightly sour milk. 

 1 pare olive oil. 



1 part linseed oil. 



3 parts kerosene. 



Used in the proportions of 1 to 8, 1 .to 4, and 1 to 2, both with and without 

 oil of citronella. 



The repellent action secured by this mixture was only fair, even when used 

 in the proportion of 1 to 2, with oil of citronella, and the cost was such that the 

 mixture could not be considered of practical value. 



VII. Milk Emulsion and Fish Oil: 

 Mixture No. 1. 



2 parts milk emulsion, stock solution. 

 1 part fish oil. 



4 parts water. . / 



When used with oil of citronella the repellent action secured was good, and 

 it was found necessary to apply only small quantities of the mixture. 



Mixture No. 2. 



1 part milk emulsion, stock solution. 

 1 part fish oil. 

 4 parts water. 



When used with oil of citronella good repellent action was secured, and it was 

 found necessary to apply only small quantities of this mixture. 



The success of the milk emulsion as a repellent when fish oil was added to it 

 led us to believe that if we incorporated fish oil in the stock solution and then 

 diluted this with water in the necessary proportions, that we should have a rather 

 satisfactory repellent. This led us to compound the following mixture. 



VIII. Fish Oil, Kerosene and Milk. 

 1 gal. fish oil. 

 1 gal. Kerosene. 

 1 gal. slightly sour milk. 

 6 oz. oil of citronella. 



This stock solution was used in proportions of 1 to 2, 1 to 3 and 1 to 4, of 

 water. The repellent action secured in all cases was good, so much so that the 

 mixture can be recommended as having decided practical value. 



This mixture gave far the best results of any home-made mixtures tested, and 

 the amount required is so .small that the cost of spraying is extremely slight as 

 compared with that of commercial repellents. 



Another summer's work will doubtless improve the stock solution, in that the 

 proportion of the ingredients may be varied 'somewliat, but the writer feels that the 

 mixture essentially as given will form the basis for a very satisfactory home-made 

 repellent. 



Since the work outlined here was undertaken this mixture has been recom- 

 mended for trial to a considerable number of farmers, and in all cases where 

 reports have been received from them, the mixture has given very good results as 

 a repellent. 



It was found necessary when this spray was first started to apply it every day 



