MICHIGAN ACADEMY OF SCIENCE. 



167 



LIGHT RELATION— S-shade, W-open woods, B-borded, 0-open. 



SOIL RELATION — C-c!ay, T-till, L-Ioam, S-sand, G-gravel. H-humus, P-peat, C '-calcareous, 

 R-rock, A-alluvium. Ex SL-G=Sandy loam over gravel sub-soil. 



SOU, CONDITION — Covered by L-dead leaves, P-living plants, U-uncovered. 



SOIL ORIGIN — C-lake clays, S-lake sands, S '-dune sands, M-morainlc, G-outwash gravels and 

 sands, D-glacial drainage "channels, T-till plains, A-stream alluvium, R-soil in s'lhi. 



PLANT RELATION— S-symbiont, S '-saprophyte, P-parasite, H-host, l-partially, 2-wliolly (for 

 Card Index only). An environment may be limited, for example, to the bark on the north side of a 

 tree. In such a case, give details, (for Environment Record sheets only\ 



ANIMAL RELATION — S-symbiont, S '-saprophyte, P-parasite, I-insectivorous, 1-partially, 2- 

 wholly. (Card Index onlv.) Defended by a-spines, b-thorns, c-resistant epidermis, d-hirsute- 

 ness, e-pubescence, f-acridity or acidity, (for Card Index only.) Give animals committing notice- 

 able ravages in selected environment, (for Environment Sheets only.) 



.Tp. 



.R. 



ENVIRONMENT RECORD FOLIO. 



State County 



Locality 



Recorder Envir. Rec. Sheet No. 



Environment Factors. 



Changing To. 



Water Relation. . 

 Water Condition. 

 Ground Slope . . . 



Drainage 



Light Relation . . 

 Soil Relation. . . . 

 Soil Condition. . . 



Soil Origin 



Plant Relation. . . 

 Animal Relation. 



Date of 

 Observ. 



Changing To. 



