"VALUABLE MEDICAL INVENTION.--The attention of physicians and others interested, is called to an Improved Portable Syringe, invented and sold by Mr. Thomas Lewis, No. 166 Washington street, of this city. We have seen the instrument alluded to, and although there are many now in use for the same objects, yet we have the authority of several of our first physicians for saying that none approach this invention in perfectedness of plan or execution. The syringe is plainly and simply constructed, not liable to get out of order, and can be used with the utmost facility by the invalid. Directions for its use are plainly and amply set forth on the case, and each instrument is fully warranted." _From the Boston Daily Evening Telegraph, Dec. 3, 1855._ "PORTABLE SYRINGE.--Our attention was called a few days since to an improved Portable Syringe for domestic use, which is of great value. It is superior to any other which has yet been invented, and must, we think, be preferred by physicians and others who are obliged to use such an instrument. While it is very simple in its construction, it is perfectly adapted for the purposes for which it is designed. Its size is such as to make it a very portable and convenient apparatus for traveller's use." _From the Worcester Mass. Journal of Medicine, April, 1856._ LEWIS'S IMPROVED PORTABLE SYRINGE: We take occasion to call the attention of our readers to the "Domestic Injecting Apparatus" manufactured by Thomas Lewis, No. 166 Washington Street, Boston. It is decidedly the best construction of metalic syringe that we have ever seen. It has many important advantages over any other form of syringe. Its construction is such that the valvular apparatus seldom gets out of place. It is small and convenient, enclosed in a neat box, and may be conveniently carried in almost any way. The objections commonly urged against the metalic syringe, are in this improvement wholly obviated. Its long flexible tube allows a convenient self-application. Persons having the syringe need not the aid of an assistant. Connected with the syringe are full directions with reference to its use, and the advantages to be derived from it. The mass of people are but little aware of the great benefits derived from the frequent use of common water injections. This want of practical knowledge arises more from the want of a good instrument than any other cause. We can strongly recommend Lewis's Improved Syringe in this particular. Physicians themselves would always find it advantageous to recommend a good instrument of the kind to their patients. _From the New Hampshire Journal of Medicine._