38 MASS. EXPERIMENT STATION BULLETIN 293 



Brands 

 Products Registered 



Mixed fertilizers 33i 



Ground bone, tankage and 



fish 58 55 183 68 325 



Nitrogen products, organic 



and mineral 56 



Phosphoric acid products 28 



Potash products 18 



Dried, pulverized natural 



manures 23 



Nitrate of potash 6 



Miscellaneous 15 



Lime products 36 



Totals 573 546 2,008 885 7,272 



*Not counting check tests or repeats. 



During the period July 1, 1931, to July 1, 1932, the tonnage of fertilizer and 

 plant food sold in Massachusetts was as follows: 



i Plant Food Elements (Tons) 



Available 



Fertilizer Nitrogen Phosphoric Potash 



(Tons) Acid 



Mixed fertilizers 39,689 1,957 3,386 2,725 



Unmixed fertilizer chemicals and materials 20,325 1,350 1,476 534 



Pulverized natural manures 1 ,939 40 27 53 



Totals 61,953 3,347 4,889 3,312 



Full details of the fertilizer and lime inspection will be found in Bulletins 65 

 and 66, Control Series. 



Miscellaneous Analytical Work. (H. D. Haskins, H. R. DeRose, A. F. 

 Spelman, J. \V. Kuzmeski.) Cooperative chemical investigations have been 

 carried on, as usual, with other departments of the lixperiment Station, as well 

 as with the Waltham Field Station and with County Agents. The character 

 and e.xtent of this work is shown from the following summary: 



Celery leaves for mineral poisons 1 



Complete fertilizers 1 



Corn stover, ash analysis 33 



Farm manure 1 



Fertilizer chemicals and unmixed fertilizer materials 23 



Hay, for partial ash analysis 59 



Miscellaneous crops an.'l crop residues for ash analysis 6 



(Jil emulsion 1 



Soils, analysis of water extract of 15 



Tomato pulp, dried, complete analysis 2 



The usual variety of chemical work has been performed for farm organizations 

 and state institutions, as well as individuals interested in agriculture. Reports of 

 results have in all cases been accompanied by interpretations and advice with 

 reference to the problems involved. This group includes the following materials: 



