the past condition of organic nature-第5节

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regions。　　If　I　went　below　that；　I　should　come　upon　the　chalk；　and　there
I　should　find　something　altogether　different；　the　remains　of
ichthyosauri　and　pterodactyles；　and　ammonites；　and　so　forth。

I　do　not　know　what　Mr。　Godwin　Austin　would　say　comes　next；　but　probably
rocks　containing　more　ammonites；　and　more　ichthyosauri　and　plesiosauri；
with　a　vast　number　of　other　things；　and　under　that　I　should　meet　with
yet　older　rocks；　containing　numbers　of　strange　shells　and　fishes；　and
in　thus　passing　from　the　surface　to　the　lowest　depths　of　the　earth's
crust；　the　forms　of　animal　life　and　vegetable　life　which　I　should　meet
with　in　the　successive　beds　would；　looking　at　them　broadly；　be　the　more
different　the　further　that　I　went　down。　　Or；　in　other　words；　inasmuch
as　we　started　with　the　clear　principle；　that　in　a　series　of
naturally…disposed　mud　beds　the　lowest　are　the　oldest；　we　should　come
to　this　result；　that　the　further　we　go　back　in　time　the　more　difference
exists　between　the　animal　and　vegetable　life　of　an　epoch　and　that　which
now　exists。　　That　was　the　conclusion　to　which　I　wished　to　bring　you　at
the　end　of　this　Lecture。







End