. An annotated list of the important North American forest insects. Forest insects. 6 FAKMERS BULLETIN 1G23 was suiRciently abundant to cause some defoliation between the Connecticut River and the zone area. During the period covered by the tabulation, parasites and natural enemies of the gipsy moth have been scarce in most of the infested area, but in the summer of 1929 an increase was noted. On account of these conditions the control work done by the States and the cities and towns has been confined. Figure 3.—Quarantined areas, 1928 chiefly to residential sections and to parks and street tr
. An annotated list of the important North American forest insects. Forest insects. 6 FAKMERS BULLETIN 1G23 was suiRciently abundant to cause some defoliation between the Connecticut River and the zone area. During the period covered by the tabulation, parasites and natural enemies of the gipsy moth have been scarce in most of the infested area, but in the summer of 1929 an increase was noted. On account of these conditions the control work done by the States and the cities and towns has been confined. Figure 3.—Quarantined areas, 1928 chiefly to residential sections and to parks and street trees. Very little work has been done in woodland areas. More infestations were found in the barrier zone in 1928 after July 1 than during the entire previous fiscal j^ear, which made the problem of preventing the increase of the insect far more difficult and emphasized the im- portance of carrying on work in the territory east of the zone in order to make it possible to keep the zone free from infestations. As a result of the increase in infestation directly east of the zone, 7 towns in Vermont, 12 in Massachusetts, and 31 in Connecticut, em- bracing an area of 1,581 square miles, were added to the generally infested area under Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Craighead, Frank C. (Frank Cooper), 1890-; Perry, George S; Snyder, Thomas Elliott, b. 1885; Hopkins, A. D. (Andrew Delmar), 1857-1948; MacAloney, Harvey John, 1896-; Graham, Samuel Alexander, 1891-; Peirson, Henry Byron, 1894-; Herrick, Glenn W. (Glenn Washington), 1870-1965; Britton, Wilton Everett, 1868-1939; Tanaka, T; Sanders, J. G; Howard, L. O. (Leland Ossian), 1857-1950; Chittenden, F. H. (Frank Hurlbut), 1858-1929; St. George, R. A. (Raymond Alexander), b. 1894; Beal, J. A; Middleton, William, b. 1893; Burgess, A.
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
