That makes a bit of a difference, yes.

MODSRC/vazkii/botania/common/block/BlockSpreader.java

@@ -23,17 +23,20 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.Icon;
 import net.minecraft.world.World;
+import vazkii.botania.api.ILexiconable;
 import vazkii.botania.api.IWandHUD;
 import vazkii.botania.api.IWandable;
+import vazkii.botania.api.lexicon.LexiconEntry;
 import vazkii.botania.api.mana.ILens;
 import vazkii.botania.client.lib.LibRenderIDs;
 import vazkii.botania.common.block.tile.TileSimpleInventory;
 import vazkii.botania.common.block.tile.TileSpreader;
 import vazkii.botania.common.item.ModItems;
+import vazkii.botania.common.lexicon.LexiconData;
 import vazkii.botania.common.lib.LibBlockIDs;
 import vazkii.botania.common.lib.LibBlockNames;
 
-public class BlockSpreader extends BlockModContainer implements IWandable, IWandHUD {
+public class BlockSpreader extends BlockModContainer implements IWandable, IWandHUD, ILexiconable {
 
 	Random random;
 
@@ -146,4 +149,9 @@ public class BlockSpreader extends BlockModContainer implements IWandable, IWand
 		((TileSpreader) world.getBlockTileEntity(x, y, z)).renderHUD(mc, res);
 	}
 
+	@Override
+	public LexiconEntry getEntry(World world, int x, int y, int z, EntityPlayer player, ItemStack lexicon) {
+		return LexiconData.spreader;
+	}
+
 }

resources/assets/botania/lang/en_US.lang

@@ -213,7 +213,7 @@ botania.page.mIntro2=To get started with mastering the art of &4Mana&0, one woul
 botania.entry.spreader=Mana Spreader
 botania.page.spreader0=The &1Mana Spreader&0 is the most inportant component in manipulating &4Mana&0.<br>This is the block that allows &4Mana&0 to travel from point A to point B. When this block is placed on the ground, it'll face one of 6 basic directions. By shift-right clicking it with a &1Wand of the Forest&0, one can orient it to the opposite of where it was clicked. 
 botania.page.spreader1=Holding a &1Wand of the Forest&0
-botania.page.spreader2=The &1Mana Spreader&0 has a small internal buffer of &4Mana&0, which will get filled by nearby &4Generating Flowers&0. This buffer can be viewed by looking at the &1Spreader&0 with a &1Wand of the Forest&0, as demonstrated in the last page. Note that the block needs to be right clicked to get accurate and adequate values.  
+botania.page.spreader2=The &1Mana Spreader&0 has a small internal buffer of &4Mana&0, which will get filled by nearby &4Generating Flowers&0. This buffer can be viewed by looking at the &1Spreader&0 with a &1Wand of the Forest&0, as demonstrated in the last page.<br>Note that the block needs to be right clicked with a wand to get accurate and adequate values.  
 botania.page.spreader3=Holding a &1Wand of the Forest&0 displays a beam which shows where the spreader is pointing at. Hovering over it shows the target.<br>If the target of the spreader is a block that can contain mana, and isn't full, the spreader will fire a &4Mana Burst&0, which will travel to the target, and pass the mana along to it.
 botania.page.spreader4=The spreader only fires one burst at once, it'll only fire another one when the last one hits the target.<br>Furthermore, the bursts also, after a small amount of time start suffering &4mana loss&0, this can be seen in the beam, as when this happens it becomes a lot thinner.
 botania.page.spreader5=Crafting the &1Mana Spreader&0