diff --git a/CompositionKit-Demo/Book.HostingView.swift b/CompositionKit-Demo/Book.HostingView.swift
index 6db20a0..dc4e4e4 100644
--- a/CompositionKit-Demo/Book.HostingView.swift
+++ b/CompositionKit-Demo/Book.HostingView.swift
@@ -8,89 +8,6 @@ import UIKit
 @MainActor
 extension Book {
 
-  static var hostingView: some BookView {
-
-    BookNavigationLink(title: "HostingView") {
-
-      BookPreview(expandsWidth: true, maxHeight: 300, minHeight: 300) {
-
-        let view = HostingView { _ in
-          BookLozenge()
-        }
-
-        view.backgroundColor = .yellow
-
-        return CompositionKit.AnyView { _ in
-
-          ZStackBlock {
-
-            view
-
-          }
-        }
-
-      }
-
-      BookPreview(expandsWidth: true, maxHeight: 300, minHeight: 300) {
-
-        HostingView { _ in
-          Text("Hello, HostingView")
-            .padding()
-        }
-
-      }
-
-      BookPreview(expandsWidth: true, maxHeight: 300, minHeight: 300) {
-
-        AnyView { _ in
-          HStackBlock(spacing: 2) {
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-          }
-        }
-
-      }
-
-      BookPreview(expandsWidth: true, maxHeight: 300, minHeight: 300) {
-
-        AnyView { _ in
-          VStackBlock(spacing: 2) {
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-            HostingView { _ in
-              InteractiveView()
-            }&>.do {
-              $0.backgroundColor = .lightGray
-            }
-          }
-        }
-
-      }
-    }
-
-  }
-
   struct BookLozenge: View {
     var body: some View {
       Text("こんにちは")
diff --git a/CompositionKit-Demo/Book.swift b/CompositionKit-Demo/Book.swift
index 9d67020..efdd9b5 100644
--- a/CompositionKit-Demo/Book.swift
+++ b/CompositionKit-Demo/Book.swift
@@ -7,7 +7,6 @@ let book = Book(title: "MyBook") {
 
   if #available(iOS 13, *) {
     Book_VGridView.body
-    Book.hostingView
   }
   
   Book.dynamicAnimator