10 Jan., 1918. J List of Fertilizers Registered. 39 



LIST OF FERTILIZERS REGISTERED UNDER THE 

 ARTIFICIAL FERTILIZERS ACT FOR THE YEAR 1918. 



P. Rankin Scott, Chemist for Agriculture. 



Under the provisions of the Artificial Fertilizers Act, all manufac- 

 turers and importers of fertilizers are bound to submit for registration 

 on or before the 1st November in each year, a brand for each fertilizer 

 they intend offering for sale during the following year. In addition 

 to his full name and place of business, and the figure, trade mark or 

 sign to be associated with a fertilizer to identify it, each applicant is 

 required to gi^'e a statement of the percentage composition of the fertilizer 

 for which registration is desired in respect of its nitrogen, phosphoric 

 acid, and potash, showing the forms in which they occur, and the retail 

 price of the fertilizer. The list of registered brands that have been 

 accepted is to be found on pages 42 to 46 of this issue. 



The term " form " has reference to the combination of the fertilizing 

 constituent with other constituents. On the combination of the essen- 

 tial element with other elements largely depends the availability of 

 the fertilizer. 



A fertilizer according to the Act is any material containing nitrogen, 

 phosphoric acid or potash which has been manufactured, produced, or 

 prepared in any manner for the pui'pose of fertilizing the soil or supply- 

 ing nutriment to the plant. The brands registered include only nitrogen 

 and phosphoric acid. 



TJnit Values. 



In order to arrive at the unit-values for the year, the Chemist of 

 the Department of Agriculture, from the result of the analysis of 

 fertilizers set forth in the applications for the annual registration of 

 brands, and taking into account the constituents Avhich have a com- 

 mercial value, and the value thereof, in the simple fertilizers in which 

 they occur, calculates the average unit-values of such constituents. Such 

 average unit-values form the basis for calculating the values of all 

 fertilizers for the period during which any registered brand continues 

 in force. A table showing the different unit-values fixed for the year 

 1918 is shown on page 41. 



These values serve a useful purpose, as they enable a purchaser to 

 compare the value of various brands. To determine the value, multiply 

 the percentage of the constituent as guaranteed by the unit-value fixed 

 for the same, according to the form in which it occurs, and the result 

 will return the value for that ingredient. When a fertilizer contains 

 more than one ingredient, this method of calculation must be repeated, 

 and the several results totalled in order to ascertain the value of the 

 fertilizer. 



Take, for example, a bone fertilizer and a bonedust — 



Bone fertilizer containino — - 



