diff --git a/images/illustration-10.png b/images/illustration-10.png
index 025e76f..f27b36a 100644
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diff --git a/images/illustration-11.png b/images/illustration-11.png
index 6715bbc..4a5110d 100644
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diff --git a/images/illustration-12.png b/images/illustration-12.png
index e295b5f..a1bbd9f 100644
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diff --git a/images/illustration-13.png b/images/illustration-13.png
index 75868d0..d202cea 100644
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diff --git a/images/illustration-14.png b/images/illustration-14.png
index b6167e3..aeb74fb 100644
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diff --git a/images/illustration-15.png b/images/illustration-15.png
index 278fa78..b39fe8a 100644
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diff --git a/images/illustration-2.png b/images/illustration-2.png
index 43fb539..800baea 100644
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diff --git a/images/illustration-3.png b/images/illustration-3.png
index 76b5d5f..dcb35d1 100644
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diff --git a/images/illustration-4.png b/images/illustration-4.png
index 478362e..0ae402d 100644
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diff --git a/images/illustration-5.png b/images/illustration-5.png
index 522813e..1c53549 100644
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diff --git a/images/illustration-6.png b/images/illustration-6.png
index 1113546..f798d88 100644
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diff --git a/images/illustration-7.png b/images/illustration-7.png
index 23db8d2..f4d05ea 100644
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diff --git a/images/illustration-8.png b/images/illustration-8.png
index afa97a6..59d8a41 100644
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diff --git a/images/illustration-9.png b/images/illustration-9.png
index 455db8a..1cc4733 100644
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diff --git a/src/epub/css/local.css b/src/epub/css/local.css
index 6f5eab6..a7718d5 100644
--- a/src/epub/css/local.css
+++ b/src/epub/css/local.css
@@ -56,6 +56,8 @@ section[epub|type~="dedication"] > *{
/* figures */
figure{
break-inside: avoid;
+ margin: 1em 40px;
+ text-align: center;
}
figure img{
diff --git a/src/epub/images/illustration-10.svg b/src/epub/images/illustration-10.svg
index 4d1a892..173471a 100644
--- a/src/epub/images/illustration-10.svg
+++ b/src/epub/images/illustration-10.svg
@@ -1,38 +1,4 @@
-
-
\ No newline at end of file
diff --git a/src/epub/images/illustration-11.svg b/src/epub/images/illustration-11.svg
index ee3b5c1..57c98d8 100644
--- a/src/epub/images/illustration-11.svg
+++ b/src/epub/images/illustration-11.svg
@@ -1,14 +1,4 @@
-
-
+
+Drawing of the interior of a coral atoll, with an island and distinct peak in the center.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-12.svg b/src/epub/images/illustration-12.svg
index 7753bd2..5d6ffef 100644
--- a/src/epub/images/illustration-12.svg
+++ b/src/epub/images/illustration-12.svg
@@ -1,17 +1,4 @@
-
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+
+Cross-sections of three coral islands showing different levels of water in comparison to shapes of the land.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-13.svg b/src/epub/images/illustration-13.svg
index 11f3032..4000a25 100644
--- a/src/epub/images/illustration-13.svg
+++ b/src/epub/images/illustration-13.svg
@@ -1,8 +1,4 @@
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+
+Side drawing of a coral island with various labelled cross-sections indicated.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-14.svg b/src/epub/images/illustration-14.svg
index 05cb835..1af0079 100644
--- a/src/epub/images/illustration-14.svg
+++ b/src/epub/images/illustration-14.svg
@@ -1,8 +1,4 @@
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+
+Side drawing of a coral island with the original volcano shown, with various labelled cross-sections.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-15.svg b/src/epub/images/illustration-15.svg
index ee9b5b3..b6d29d0 100644
--- a/src/epub/images/illustration-15.svg
+++ b/src/epub/images/illustration-15.svg
@@ -1,50 +1,4 @@
-
-
+
+The interior structure of a volcanic bomb, showing the coarsely cellular central part, the cells decreasing in size towards the top of the drawing, followed by a shell-like case and outer crust.
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\ No newline at end of file
diff --git a/src/epub/images/illustration-2.svg b/src/epub/images/illustration-2.svg
index 37a22da..f6ba77f 100644
--- a/src/epub/images/illustration-2.svg
+++ b/src/epub/images/illustration-2.svg
@@ -1,15 +1,3 @@
-
-
- A mineral with inclusions resembling small plants.
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+
+A mineral with inclusions resembling small plants.
+
\ No newline at end of file
diff --git a/src/epub/images/illustration-3.svg b/src/epub/images/illustration-3.svg
index 731238b..e54b3a3 100644
--- a/src/epub/images/illustration-3.svg
+++ b/src/epub/images/illustration-3.svg
@@ -1,5 +1,4 @@
-
-
+
+Two tiny sea-creatures with bodies like tubes with conical ends, joined together.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-4.svg b/src/epub/images/illustration-4.svg
index c1ba44b..aa75e33 100644
--- a/src/epub/images/illustration-4.svg
+++ b/src/epub/images/illustration-4.svg
@@ -1,7 +1,4 @@
-
-
+
+A drawing of the head and bill of the Scissor-beak bird, from the side, showing the much longer lower mandible, and from above showing its laterally flattened beak.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-5.svg b/src/epub/images/illustration-5.svg
index e30aa35..9bb9b86 100644
--- a/src/epub/images/illustration-5.svg
+++ b/src/epub/images/illustration-5.svg
@@ -1,18 +1,4 @@
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+
+A globular fungus with its entire surface deeply pitted or honeycombed.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-6.svg b/src/epub/images/illustration-6.svg
index d7ab64c..01d39e7 100644
--- a/src/epub/images/illustration-6.svg
+++ b/src/epub/images/illustration-6.svg
@@ -1,37 +1,4 @@
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-
+
+Sketch map of the glacier which reaches the Gulf of Penas, showing the length and width of the glacier, and a morass to the west of it.
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+
\ No newline at end of file
diff --git a/src/epub/images/illustration-7.svg b/src/epub/images/illustration-7.svg
index 64fb410..c8a5f8c 100644
--- a/src/epub/images/illustration-7.svg
+++ b/src/epub/images/illustration-7.svg
@@ -1,29 +1,4 @@
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+
+Sketch map of the islands of the Galapagos Archipelago, consisting of ten principal islands, of which five are much larger than the others.
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\ No newline at end of file
diff --git a/src/epub/images/illustration-8.svg b/src/epub/images/illustration-8.svg
index 502d559..4fa9f8e 100644
--- a/src/epub/images/illustration-8.svg
+++ b/src/epub/images/illustration-8.svg
@@ -1,23 +1,4 @@
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+
+Four drawings of the head and beaks of related birds found on different islands of the Galapagos, showing the variations in beak size and type.
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\ No newline at end of file
diff --git a/src/epub/images/illustration-9.svg b/src/epub/images/illustration-9.svg
index 17e237d..f6d73a4 100644
--- a/src/epub/images/illustration-9.svg
+++ b/src/epub/images/illustration-9.svg
@@ -1,8 +1,4 @@
-
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+
+A large lizard with small spines running along its back, together with a drawing of one of its teeth, both natural size and magnified.
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+
\ No newline at end of file