LAMBERT'S PURE CULTURE 



Mushroom 



Spawn 



Produced by the new grafting 

 process from selected and 

 prolific specimens, thoroughly 

 acclimatized, has never failed 

 to run. 



This spawn is made from 

 cultures taken by the selective 

 method, recently discovered, 

 from cnoice specimens of the 

 best varieties of mushrooms 

 known to be thoroughly accli- 

 matized, and selected with 

 special reference to their size, 

 flavor, vigor and prolificness. 

 The elements of uncertainty 

 surrounding th old chance 

 method of producing wild 

 spawn (English and French), 

 is therefore eliminated, and a 

 uniform crop of the best mar- 

 ketable variety is thus assured 



to tl;e exclusion of all other and inferior fungi. 



Tl'.e importance of this discovery will be realized from the mere 



statement th.at, for t]:e first time in the history of mushroom culture, 



can spawn be ofTered of a specific vpriety of mushrooms. 



Of tl'.e varieties cilready developed, we are offering pure culture 



spawn of the Agaricus Cainfiestris (white, cream or brown), A. Arvcnsis 



(cream), and A. J'tllatiais (cream). 



FOR S.ALE BY ALL LEADING SEEDSMEN. 



Practical Instructions on "MUSHROOM CULTURE" 

 mailed free on application. 



American Spawn Company, 



ST. PAUL, MINN. 



When answering advertisement mention Mycological Bulletin. 



