Fam.

des Plant.tom.1 page 121.) Spallanzani,* who appears to have carefully examined the unimpregnated Ovula of a considerable variety of plants, found it in general to be a homogeneous, spongy, or gelatinous body; but in two Cucurbitaceae to consist of a nucleus surrounded by three coats.

Of these coats he rightly supposes the outermost to be merely the epidermis of the middle membrane or testa.

Of the relative direction of the testa and inner coat in the two plants in question he takes no notice, nor does he in any case mention an aperture in the Ovulum.
(*Footnote.

Fisica Anim.