descriptions. Lange and Gumprecht, the two persons that reviewed , sing his praise for the introduction and popularisation of the pretty garden shrub Weigela Middendorfiana to Europe's gardens. In addition to that Regel wrote: "It is mainly Dr. Tiling to whom we owe the introduction of many excellent Siberian plants" The review of Lange and Gumprecht go far above a normal book review. They add information about Tilings voyage that is not contained in the book they review. The size of the review with 21 full pages is remarkable as well. Although was published anonymously the reviewers did know the author and supported his views. At least among the German speaking people "in the know" it was clear who the author of was. There must have been intensive contact between author and reviewers previously. Specifically intensive was Tilings exchange with the director of the Botanical Gardens in St Petersburg, Eduard August von Regel with whom he published Florula Ajanensis. Trained as a medical man and having the collection of plants at his heart his interests far exceeded these two areas. One example is the meteorological observations in Ayan described above. This is probably the earliest systematic weather observations taken in Eastern Siberia. Through the scientifically trained experience of different geographical areas of the world and their resulting flora and fauna Tiling developed a very modern view of the development of nature. At the beginning of his lecture "On the inhabitants of the seas" (German: ), which he gave after his return from Ayan, he made people aware of the differences in the various parts of the sea and the reason for it. The Baltic Sea, on whose shore he and his audience was born and raised, he thought as very poor in diversity of species. Today that is an acknowledged fact. As the most widely known example for the extinction of species he names Steller's sea cow "… We have seen not very long ago the extinction of an animal of the sea and that in a part of the sea that seemed so vast to us that we thought it should give shelter for its harassed inhabitants." The large variety of species and individuals in the Sea of Okhotsk near his former home Ayan was described very lively. He combined this knowledge with what he had seen on his return voyage to Europe 1851–1852 as ship's surgeon from Ayan