 Complete the following phrase:  While John Bradby Blake was working in Canton Guangzhou and Macao, Captain Blake was an essential part of his sons international botanical network. Involved in the Royal Society for the Encouragement of Arts, Manufactures and Commerce, Captain Blake connected John Bradby Blakes shipments of seeds and other botanical materials with botanists and merchants around the world. This included correspondence with John Ellis, whose designs for transporting live plants across the ocean are very similar to John Bradby Blakes, and Henry Laurens, a future signer of the 