National Geographic : 1964 May
LKA -IN, 'THERAPY CAVITY FILLING INVIGORATING Scientific tree care recognizes no seasonal limits. There are always forces working against a tree's health-insects, chemicals, undernour ishment, droughts, diseases, sleet, wind and lightning are continuallytaking their toll. Only regular tree care based on scientific research and practical training brings satisfactory re sults. Call a qualified Bartlett representative today and have him give you a definite pro gram for the care of your trees. BARTLETT TREE EXPERTS Home Office, 2770 Summer Street, Stamford, Conn. Research Laboratories and Experimental Grounds, North Stamford, Conn. Local Offices from Maine to Florida and west to Illinois and Alabama.