Description:
<jats:title>ABSTRACT</jats:title>
<jats:p>The changes which take place during and subsequent to Stage G are mainly changes of growth and histological differentiation, The most important organs which have not yet made their appearance by the close of Stage F, are the crural glands and tracheæ. The origin of the latter is, I regret to say, still hidden from me. The remaining organs have acquired, in all essential respects, the adult relations by the close of Stage F.</jats:p>