The indicator plants that suggest good sites for Asiatic chestnuts are: (a) Tree species--yellowpoplar, northern red oak, white ash, sugar maple, and yellow birch; (b) shrub species--spicebush; (c) herbaceous species--maiden hair fern, bloodroot, jack-in-the-pulpit, squirrelcorn and/or Dutchman's breeches. Plants that indicate sites too dry for forest-tree growth of Asiatic chestnuts are: (a) Tree species--the "hard" pines, black oak and scrub oak; (b) shrub species--dwarf sumac, and low blueberry; and (c) herbaceous species--broomsedge, wild strawberry, and povertygrass. Plants that indicate sites too wet are: (a) Tree species--black ash, red maple, and willows; (b) shrub species--alder; (c) herbaceous species--sedges and skunkcabbage. Climatic Test Plots On the basis of the experience gained from the earlier, extensive distribution of Asiatic chestnut planting stock, the Division of Forest Pathology, during the years of 1936, 1938, and 1939, established 21 Asiatic chestnut climatic test plots on cleared forest lands in eight eastern States on the most favorable sites obtainable. These plots, with their isolation borders, aggregating slightly less than 32 acres, and accommodating nearly 22,000 trees spaced 8 by 8 feet, occur from northern Massachusetts, along the Alleghenies southward to the southern Appalachians in southwestern North Carolina, and from the Atlantic seaboard, in southeastern South Carolina through the Middle West to southeastern Iowa. More than 20 strains are being tested at each place, including Chinese, Japanese, Seguin, and Henry species, as well as hybrids, and progeny of some of the oldest introduced chestnuts. Most of the plots are fenced against livestock and deer.