...That made me observant and led meto notice a second point... 
John Buchan 「Mr. Standfast」
... This vaticination, which loses much in the translation, I have given rather fully, as it shows an observant mind...
David Livingstone 「Missionary Travels and Researches in South Africa」
...To induce a young dog to become thus observant, always lethim perceive that you watch a wounded bird with great eagerness; hisimitative instinct will soon lead him to do the same...
Dinks, Mayhew, and Hutchinson 「The Dog」
...As an initiatory lesson in making him observant of the flight and fallof birds, place a few pigeons, or other birds, during his absence, each ina hole covered with a tile...
Dinks, Mayhew, and Hutchinson 「The Dog」
... in any case; and ifMatey had been an observant creature...
A. J. Dawson 「Finn The Wolfhound」
...You have an observant mind, a taste for research, a lively style and a ready pen...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...These episodes are but examples of parallels which will occur to the observant reader...
Chretien DeTroyes 「Four Arthurian Romances」
...This nativewas taciturn and observant of such natural circumstances, to a degree thatmade his opinion of value in doubtful cases...
Thomas Mitchell 「Journal of an Expedition into the Interior of Tropical Australia」
便利！手書き漢字入力検索