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. All 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. 



