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SEVENTEENTH REPORT. 



Names of seeds tested. 



Amaranthtts retroflexus . . . . 

 Ambrosia artamisiaefolia . . 



Brassica nigra 



Bromus secalinus 



Capsella Bursa-pastoris. . . . 



Erechthites hicracifolia 



Euphorbia maculata 



Lepidium virginicum 



Lychnis Githago 



Maruta Cotula 



Malva Totundifolia 



Oenothera biennis 



Plantago major 



Polygonum Hydropiper.. . . 



Portulaca oleracea 



Quercus rubra 



Rurnex crispus 



Selaria glauca 



Stcllaria media 



Thuja occidentalis 



Trifolium repens 



Verbascutti Thapsus 



Michigan Agriciiltiiral College, East Lansing, Mich. 



