This is a cross section of bone with a central bone marrow cavity containing red bone marrow. (Of course because of the staining for microscopic analysis, the bone marrow is blue.) The section includes a little muscle and soft tissue attached, but the elements of bone should be quite apparent. The little box indicates where the image below came from.

• Central (or Haversian) canals
• Lacunae, containing osteocytes, between concentric layers of bone
• Perforating (or Volkmann’s) canals, transversely connecting central canals, and
• Lamellae (singular: lamella), the concentric layers of bone between lacunae

Click here for an image detailing these features.

See this slide with the virtual microscope

I don't see the virtual slide, I must need the download.