div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails6jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails7jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails8jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails9jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails10jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=11Page 11button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=11 data-page=11 class=ts-thumb lazyload alt=Page 11: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails11jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=12Page 12button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=12 data-page=12 class=ts-thumb lazyload alt=Page 12: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails12jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=13Page 13button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=13 data-page=13 class=ts-thumb lazyload alt=Page 13: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails13jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=14Page 14button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=14 data-page=14 class=ts-thumb lazyload alt=Page 14: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails14jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imageimg data-url=the-possible-functional-significance-of-the-various-shell-structures-is-discussedhtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: · The possible functional significance of the various shell structures is discussed but it is difficult in adjacent lamellae the crystallites are aligned in opposing direc- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220423025ecd413fb2b0ca48e26af8aahtml5thumbnails15jpg width=140 height=200 divdiv