9 



ness in the floor, more security against depredation, the iron 

 presenting an additional obstruction to the floor being sawn 

 through, and the preservation of the strength of the deals in a 

 greater degree than by the ordinary wood sliffers. 



8. Sling Fracture Bed. — By T. M. Greenhow, Esq. New- 

 castle. The sling fracture bed consists of two parts. 1. The 

 first part is of the nature of a splint to which the injured limb 

 is fixed ; and the several portions of which admit of extension 

 by means of screws to accommodate them to the case under 

 treatment. 2. The second part is a support by means of which 

 the former part of the instrument is slung in an easy position. 

 The mode of application will be easily understood on inspection 

 of the instrument. The advantages of this plan of treatment 

 are — ease and security to the patient, the power of moving to a 

 certain degl'ee without hazard of displacement, and facility of 

 dressing wounds in cases of compound fractures. 



9. Splint for Fractures of the Lower Fwtremities. — By J. 

 Baird, Newcastle. 



10. J Cultivator. — By Anthony Hall, Prudhoe. — Model 

 one-fourth the working size. With this instrument a man can 

 dig one-fifth of an acre per day. 



11. Improved Colliery Bow and Hook, for the prevention of 

 accidents, in coal mines, occasioned by corves (in which the coals 

 are brought up from the pit) falling from the hooks affixed at 

 the end of the rope or chain. The improvement of the Bow con- 

 sists in the under surface of it being lozenge shaped, so that not 

 having a flat surface, as is usually the case, the bow cannot rest 

 on the point of the hook, and must either slip into the bend of 

 the hook at once, or fall off* altogether, in either of which cases 

 no accident can happen. 



12. Union Joint for Fire Engine Pipes. — By John Gardner, 

 Gun-maker, Newcastle-upon-Tyne. — When the joint is put to- 

 gether the bolt is pressed with the thumb, and the self-acting 

 spring prevents the bolt from shifting by any action whatever, 

 and when the joint is to be taken asunder the bolt head is pressed 

 with the finger and thumb and drawn at the same time, and then 



