318 Philippine Journal of Science 



mimeographed and given to the students at each succeeding 

 Clinic. This procedure has proved more valuable than when 

 students themselves made notes. It has also enabled me to keep 

 a record of the subjects presented, has avoided repetition and 

 furnished a definite material from which examination questions 

 might be selected. 



Frequently, students and visiting physicians have suggested 

 that the Clinics and Lectures be issued in consecutive order and 

 in form more substantial than loose mimeographed sheets. Dif- 

 ficulties attendant upon such arrangement finally have been 

 overcome and this volume contains the bulk of the clinical 

 matter presented during the past three months. It is hoped 

 that each quarter similar collections of Clinics and Lectures 

 may be issued and that the venture may prove as useful to 

 medical men, generally, as it has proved already to a limited 

 group of students. 



Ultra Violet Rays In j Modern Dermatology | Including the evolution of 

 artificial | light rays and therapeutic | technique | by | Ralph Bern- 

 stein, M. D. [ Philadelphia, Pa. | [eighteen lines of titles] | author 

 of [ "Elementary dermatology" — numerous I brochures on skin diseases, 

 etc. I illustrated | Achey & Gorrecht | 5-9 North Queen Street | 

 Lancaster, Pennsylvania | Cloth, pp. i-xiii -+- 1-162. 



FROM THE PREFACE 



The efficacy of ultra violet rays in the practice of dermatology 

 is now thoroughly established, and its bactericidal action, its 

 anti-pruritic and analgesic effects, as well as its reconstructive 

 action upon epidermal cells and its constitutional effect upon 

 the general economy, cannot now be denied. 



The author has been prompted to write this book because no 

 American author has heretofore attempted it, the profession 

 relying entirely upon the writings of their European colleagues. 



It is the author's intention to present the subject as briefly 

 as possible with clearness, and with no intention of going into 

 histo-pathologic details. The mere thought in mind will be to 

 give in a practical way to the profession the results of his 

 clinical experience with the use of ultra violet radiations in 

 the treatment of the various skin diseases for which he has 

 found the ultra violet light a desirable agent. 



The author has thoroughly gleaned the literature of the day 

 and hereby gives credit for the material which he has used 

 therefrom to the foreign writings of Morris, Dore, Bach, Wag- 

 ner, Kruger, and Blaschko, and to the following writers from 

 our own continent: Martin, MacKee, Jordan, Plank, Collins, 

 and Allen. 



