1549 
During the war, ' the experts for the Council for 
National Defence found the hard shells of the macauba 
nuts very satisfactory in the production of charcoa] 
for use in gas masks. Seeds of A. seleroearpz have been 
introduced into the United States several times by 
this Office; the last shipment was from Lavras, idnas, 
Brazil, in 1914, under S. P. I. No. 37382. 
