|Tailed blue | 1 |May,Aug,Sep|Clover, etc. |Roadsides, | | | | | fields |Purplish violet color, has small tail-like projection on hind wings ------------------------------------------------------------------------------- The Whites |Common white | 2 |May,Jul,Sep|Mustard family |Gardens |White checkered with black on fore wings, female brownish |Cabbage butterfly| 2 |May,Jul,Sep|Cabbage, etc. |Gardens |White, black tip on fore wing, one or two spots on hind wing ------------------------------------------------------------------------------- The Sulphurs |Common sulphur | m. 1¾, |May,Jun,Sep|Clover |Meadows | | f. 2¼ | | | |Yellow, bordered with black |Cloudless sulphur| 2½ |July |Cassia and legumes |Fields |Canary-yellow color ------------------------------------------------------------------------------- The Swallowtails |Tiger swallowtail| 3-5 |June,Aug |Cherry, tulip tree |Open woods |Yellow with black lines across wings |Black swallowtail| 3-4 |June,Aug |Parsley |Gardens, | | | | | roadsides |Black with two bands of yellow spots and one band of blue spots |Green-clouded | 3¾-4¾ |June,Sep |Spice bush, |Open woods | swallowtail | | | sassafras | |Black, one row yellow spots, hind wing clouded with green |Blue swallowtail | 3¾-4¼ |July,Sep |Dutchman's pipe vine|Near houses |Black shaded with blue green, one row whitish spots =============================================================================== CHAPTER III THE CONNECTION BETWEEN STRUCTURE AND FUNCTION 1. A STUDY OF THE CELL AND OF PROTOZOA _To show what Single Cells can Do_ _Materials._ Some single cells of plant or animal tissue, stained to show structure. Slides of a one-celled animal, stained. Living one-celled animals. _Definitions._ _Cell_, the smallest living unit. _Protoplasm_, the living material composing the cell. _Nucleus_, a dense bit of protoplasm, usually near the center of the cell, often staining dark. _Cytoplasm_, the less dense protoplasm outside of the nucleus, usually taking a lighter stain. _Nucleolus_, _paranucleus_ or _micronucleus_, a very small, dense, dark-staining body, either within the nucleus (nucleolus) or near it (paranucleus or micronucleus) _Cell wall_, the lifeless membrane surrounding many cells, secreted by the protoplasm. _Food balls_, bits of food inside the cells of many one-celled animals, usually showing through the walls. _Food vacuole_, a small drop of water containing digestive material and a food ball.