231 occur, then the material of the palm sap and that which comes into the fruiting bodies may be derived eithes fran leaf surface contaminatiqmor by way of the roots from the soil, The palm frond is rather persistent, surviving for two or three years before it gets old, and then eventually dics and falis off. The contamination, therefore, of the frond may persist as a factor in the situation for a considerable length of time. There may be a discrepancy Washington, D. C. Alderson Reporting Company between the soil levels and the apparent uptake in tm 10 There is where I think more precise plant physiologist, the 11 one who knows a lot sbout paims, comes to the fore, that is, in guiding us somewhat on what vegetation specimens one 13 might tale 14 palm frond you take. to advantage. It makes a big difference on which CDR. CONARD: Om thing that might be interesting 15 16 to do that is not a great deal of trouble is to take 17 leaf radio audiographs before the leaves get wilted. 18 is very simple to put them between film and enclose them in 19 20 ARG fruit. It ~ - paper. DR. BUGHER: That would be a very good guide. 21 It is an easy technique and thoroughly reliable in its 22 application, Obviouly, thenm the group taking the environmental specimens will need to keep in close touch with a number of other groups and organizations on the sample collection project. d