36 MASS. EXPERIMENT STATION BULLETIN 388 



Insecticides and fungicides 2 



Limestone (AAA distribution) 12 



Milk 362 



Ore 8 



Peat 1 



Poultr}' feces (In connection with experiments) 9 



Poultry grits 6 



Referee and check samples, fertilizer and feed 11 



Specimens for mineral poison 3 



Superphosphate (AAA administration) 11 



Water 4 



Miscellaneous 19 



Seed Control. From December 1, 1940, to December 1, 1941, the Seed Lab- 

 oratory received and worked 3024 samples of seed, of which 942 were collected 

 by the State Commissioner of Agriculture and 2082 were sent in by seedsmen, 

 farmers, and various State institutions. In addition, 209 samples of flower 

 seeds, for field tests only, were received from the State Commissioner of Agri- 

 culture. 



Classification of these samples, with the total number of laboratory tests in- 

 volved, is shown in the following summary. It will be noted that 3998 tests were 

 required for the 3024 samples; 672 for purity, and 3326 for germination. 



Number of Number of Tests 



Samples Purity Germination 



544 Field Crops for Purity and Germination 544 544 



2 Field Crops for Purity Only 2 — 



235 Field Crops for Germination Only — 235 



81 Lawn and Other Types of Mixtures for Purity, Ger- 

 minations involving 393 ingredients 81 393 



35 Lawn Mixtures for Purity Only 35 — 



7 Lawn Mixtures for Germination Only, Germinations 



involving 36 ingredients — 36 



1926 Vegetables for Germination Only — 1926 



46 Herbs for Germination Only — 46 



16 Flower Seeds for Germination Only — 16 



2 Flower Seeds for Purity Only 2 



8 Flower Seeds for Purity and Germination 8 8 



13 Tree Seeds for Germination Only — 13 



109 Tobacco Seeds for Germination Only. . . .' — 109 



3024 Totals 672 3326 



Field tests to determine trueness to type were conducted in cooperation with 

 the Departments of Olericulture, Floriculture, and Agronomy, which tested 

 220 samples of vegetable seeds, 209 samples of flower seeds, and 30 samples of 

 oats, respectively. 



The Seed Laboratory cleaned 90 lots of tobacco seed for Connecticut Valley 

 farmers. The gross weight of the tobacco seed was 131.28 pounds and the net 

 weight for the cleaned seed was 102.17 pounds. 



Corn, oats, barley, and wheat, (162 samples), purchased by various State 

 institutions, were examined for conformity to grade purchased; and 98 samples 

 of ground cattle and poultry feed, collected by inspectors or sent in by dealers and 

 farmers, were examined microscopically. 



