214 THE MICROSCOPE. 



Collins, of Great Titchfield Street, and sold at 3d. per 

 dozen. 



Dr. Guy brought under the notice of microscopists, a 

 plan for preserving metallic sublimations, crystals, &c. in 

 small round, or oval tubes, hermetically sealed at both 

 ends. This plan may be made available for the display of 

 insects, parts of flowers, as stamens, pollen, &c. See his 

 paper in the Micros. Journal, New Series, vol. ii. p. 77. 



Fig. 137, full size. — Spring-clip for mounting. 



Dr. Maddox describes a "Wire Spring-clip for mounting 

 purposes, Micros. Soc. Trans. 1865, p. 84. To make the 

 clip, take a straight piece of brass wire four and three- 

 quarter inches in length, turn one end at six-eighths of an 

 inch with a pair of wire-pliers at right angles ; this second 

 portion, at half an inch, again bend at right angles in the 

 same plane ; now, at three-quarters of an inch, turn the 

 wire over on itself, leaving at the bend space sufficient to 

 admit a thick slide. At one inch and five-eighths twist 

 the wire completely on itself, and bring the now short 

 ends at right angles to the longest part ; file this end quite 

 flat. Give the first portion of the wire a slight curvature, 

 so that the point and bend may act as a stiff spring 

 against the under surface of the slide when applied. This, 

 although a very simple and inexpensive^ clip to make, has 

 been very much improved upon, as will be admitted by 

 those who have used the little handy spring-clip shown 

 full size in fig. 137. The Universal Clip, as it deserves to 

 be called, may be purchased for Is. 6d. per doz. of Baker, 

 Holborn, so that objects of great delicacy can be mounted 

 and left to dry and harden for any necessary length of 

 time. The little nipple which is seen to press upon the 

 glass cover in fig. 138, is made of a piece of cork or thick 

 leather. The clip simply requires pinching together be- 

 tween the thumb and finger; as soon as it is released the 



