figure, and diminish rapidly towards its base. (2) The values of x are very large in the neighbourhood of the origin, but diminish rapidly as we pass towards either side, away from the median vertical axis; and it is probable that they do so according to a definite, but somewhat complicated, ratio. If, instead of seeking for an actual equation, we simply tabulate our values of x and y in the second figure as compared with the first (just as we did in comparing the feet of the Ungulates), we get the dimensions of a net in which, by simply projecting the figure of Oithona, we obtain that of Sapphirina without further trouble, e.g.:
| x ( Oithona ) | 0 | 3 | ã6 | ã9 | 12 | 15 | ã |
|---|---|---|---|---|---|---|---|
| xÿ£¢ãý ( Sapphirina ) | 0 | 8 | 10 | 12 | 13 | 14 | ã |
| y ( Oithona ) | 0 | 5 | 10 | 15 | 20 | 25 | 30 |
| yÿ£¢ãý ( Sapphirina ) | 0 | 2 | ã7 | ã3 | 23 | 32 | 40 |
In this manner, with a single model or type to copy from, we may record in very brief space the data requisite for the production of apôÙproxôÙiôÙmate outlines of a great number of forms. For instance the difference, at first sight immense, between the attenuated body