Find information on spaces, staff, and services.
LITHGOW OSBORNE DIVISION OF FISH AND GAME COMMISSIONER STATE OF WILLIAM C. ADAMS NEW YORK DIRECTOR JOHN T. GIBBS CiMMSSINERJUSTIN T. MAHONEY DEPUT COMMISSIONER ASSISTANT DIRECTOR JOHN L. HALPIN J. V. SKIFF SECRETARY % SUPT. OF INLAND FISHERIES SUMNER M. COWDEN SUPT. OF FISH CULTURE EMMELINE MOORE. PH. D. CHIEF AQUATIC BIOLOGIST GARDINER BUMP CONSERVATION DEPARTMENT SUPT. OF GAME HENRY A. TEAL SUPT. OF LAW ENFORCEMENT ALBANY JAMES H. HILDRETH SUPT. OF MARINE FISHERIES May 17,1943. Professor Aldo Leopold, University of Wisconsin, Iadison,Wisconsin. Dear Professor Leopold: This will acknowledge your letter of May 12th,concerning tree phenology. I have had a reply also from Professor Humphrey,who regrets that his schedule will not permit him to join in our proposed study. While three stations might be considerably more desireable than two,I see no good reason why you and I cannot go ahead. Since writing you in April,the weather here has been so unusual that I want to make some changes in my own schedule of operations. Our spring has been extremely backward and cold;we had a killing frost here in the valley (elevation 300 feet) on Friday last. It seems advisable,therefor,for me to continue this year with as much of my old tree list as I can,so that I can match the 1943 data against my old series of 1933-1937,1940 and 1941. I would suggest,therefor,that we proceed as follows. Each of us will select three thrifty red pines 4-6 feet tall. pick off a few needles on the 1942 internode and make a mark on the stem with india ink which is 10 inches below the tip of the bud. If the buds have begun to expand,you can readily estimate where the tip of the dormant bud was. At weekly intervals (I do mine on Sunday),or at any convenient time so long as the gaps are not more than 7 days apart,measure the cumulative growth. Keep the data for the several trees separate. Averages are confusing,particularly if an accident happens to one of the trees. At the culmination of growth,the stem elongation will slow down sharply,then there will be an additional growth as the dormant bud is formed. Those on red pine are big enough to be readily measured. I do my measuring with a wooden yardstick,read to the nearest j inch. I believe that,if we can get a series,even tho it be small,from Wisconsin and from New York,we may get a clue as to whether there is a real difference between the two sites. Growth should culminate about mid-july,perhaps earlier. You will have to watch out for extra,seasonal growth-at least,it happens frecuently on sandy,dry sites here in New York. If you are in position to expand your study beyond a single set of trees,I am sure that you will find it interesting. One does not need more than a few trees of any one species on any one site. In fact, I customarily use only one,tho I often lone a species if my one tree has an accident of some sort. There is no limit to the possibilities, and we have not yet scratched the surface. I suggest,also,that you make a note of the blooming date of the common lilac,which is,I think,an indicator species of considerable