Family Agaricaceae 107 



It is hardly necessary to add that all tools and 

 wagons which were used in connection with the pre- 

 viously infected caves should be disinfected before 

 being used again. AH such tools and vehicles should 

 be washed in a solution of one pint of formaldehyde 

 in twenty gallons of water. In all these operations 

 extreme care is necessary for the man who operates 

 not to inhale any of the poisonous formaldehyde 

 fumes. 



