  Sherlock Holmes is a fictional character, first appeared in the story of "A study in Scarlet"1887, and created by Sir Arthur Conan Doyle in late nineteenth century. Even though Sherlock Holmes didn't receive much attention at the beginning of publication, there are 60 narratives (65 short stories and 4 full length novels), the stories have enjoyed enormous international popularity down through the years (Berg).  Nowadays, Sherlock Holmes is the one of the most common literature characters appears in the screen, and Sherlock Holmes is now a symbol to describe someone who is intelligent and logical. As Stanton O. Berg described Sherlock Holmes on his article published in Journal of Criminal Law and Criminology in 1971, "that Holmes acted as a catalyst in the evolving the modern investigative, identification and forensic science."(Berg), Sherlock Holmes is not only a fascinating character of the novel, also has a great contribution to the criminology field and forensic science field.

   I, personally, a fan of Sherlock Holmes, am fond of deduction and crime stories. I am currently reviewing the novel of Sherlock Holmes in Chinese version, and attend to read it in English version. The author Sir Arthur Conan Doyle was not a literature writer like others, so what makes his work such famous and many experts from different fields all give credits to Sherlock Holmes as mentor of forensic science and investigation, as Berg said, "Sherlock Holmes both as a teacher of scientific investigative methods as well as a germinator of the ideas they later fostered in to being. (Berg)" Sherlock Holmes has a great significance toward science and criminology.

  The central point of the sources is about what influence that Sherlock Holmes had toward the forensic science. In the article of Stanton O. Berg that published in Journal of Criminal Law and Criminology in 1971, as he said he thought that Sherlock Holmes affect the modern investigative, identification and forensic science, and he was interesting to review what others have had to say on this theory (Berg). Berg showed many evidences of how other authors and experts from different field had their own opinions toward Sherlock Holmes. He collected the words that others had on Sherlock Holmes whether they were published in the news or their books. At first, in general, he shows some evidences from experts in criminology and medicine field, their words gave credits to Sherlock Holmes that has influence not only in forensic science and criminology field, but also the whole science field, then he chose some paragraphs from the novel of Sherlock Holmes to correspond the words of the science experts. Then he compared some paragraphs from the novel to some specific areas that Sherlock Holmes has contributed such as the field of cipher, the study of different tobacco ashes, identification of firearms and the important of individuality of one's handwriting, to the reality. Two of the secondary sources indicate even now majority of people still believe that Sherlock Holmes is pioneer to the criminology and forensic science field. The primary source was published in 1971, the author Stanton O. Berg collected evidences form both novel and reality to draw a conclusion that Sherlock Holmes is the father of scientific crime detection. 

  The primary source was published a century ago from my secondary sources. By comparing sources from different time period, we can see how Sherlock Holmes has his influence throughout the century, he is still significant enough for people to discuss and research about him. Because of the different time period, there will be bias and limitations toward both sources; I need to find another primary research that has comparison to modern forensic science. The bright part is comparison through history can show Sherlock Holmes is still a fascinating character of people to find out about.

