December, 1906] 



Mycological Bulletin Nos. 71 and 72 



283 



I'"ig. 218. W'tight 2o oz. (Cut from Pure Culture Spawn Co.) 



friMting and large yields. We did it. Not all at one time to be sure, but 

 only after many co.stly trials and experiments. It was placed on the 

 market as Tissue-Culture Pure Spawn. 



"This name tells just what it is. Absolutely pure cultures of mush- 

 room spawn made only from the tissue of selected mushrooms. * * * 



'"Our spawn has been tested by several experiment stations and the 

 results speik well for it. The Cornell University Agricultural Experiment 

 Station reports over 2 pounds per square foot of bed in about three 

 months from spawning Referrirg to t' e Pure Culture Spawn Company, 



they say: 'It is possible with the method employed by this company to 

 cultivate varieties Irue to name because the spawn is derived from known 

 varieties, where? s most or all of the importtd spawn may contain several 

 vrrieties mixed.' * * * 



"We now offer spawn of five select varieties, all our own introduc- 

 tion. A number of other forms are being tested. The following varieties 



