closely up to the tree, the mast on line with center of the tree, and the 

 wings are closed. The parts are kept tight together by means of a rope 

 passing through screw-eyes placed alternately on both frames, thus lacing 

 them together after the manner of a shoe. When being drawn from tree to 

 tree the wings of the tent are swung back, the lower end of tlie frame rest- 

 ing on a scantling and fastened by means of bolts working in a slot, the 

 frames being braced by ropes, one on each side. In windy weather some 

 difRculty is experienced in handling this as all other tents. The cloth falls 

 on the ground and laps sufficiently to cover both ends where the two frames 

 meet. 



On the whole, I believe it the best appliance for covering small and 

 middle sized trees, but I should not recommend it for trees larger than 

 twelve to fourteen feet. The frame of the tent I operated with was twelve 

 feet high. The Titus frame and tent were the ones used by Mr. Morse in 

 his experiments. This apparatus is well described by Mr. Coquillett in 

 his report as follows: 



THE TITUS FUMIGATOR, 



This apparatus was devised by Mr. L. H. Titus, of San Gabriel, and is especially designed 

 for operating on tall trees, and consists of four corner posts made by bolting together two 

 boards in such a manner that they form a right angle with each other; at the upper ends 

 these posts are connected by crosspieces formed of boards bolted together like those form- 

 ing the corner posts. Two of these crosspieces are longer than the other two, and are 

 placed on opposite sides of the frame ; they are connected near the middle by two cross- 

 pieces, between which is placed the roller upon which the tent is to be wound when being 

 drawn olf the tree. These various crosspieces are braced, as shown in plate. 



The lower end of each of the rear corner posts is rigidly attached to an axle, on the 

 outer end of which a light wheel is placed, while the inner end is connected with the cor- 

 ner post by an oblique brace. The lower end of each of the front corner posts is attached to 

 the middle of an axle having a light wheel at each end. The post is attached to the axle by 

 an iron bolt, which permits the wheels to be at the saine moment turned, the one forward 

 and the other backward, like the forward wlieels of a wagon or buggy. By means of this 

 arrangement the fumigator can be turned about in a circle. The front and rear corner 

 posts on each side of the fumigator are connected with each other by a crosspiece extend- 

 ing from one to the other, and strengthened by braces which extend obliquely from the 

 crosspiece to the posts. 



When this fumigator is in use the front and rear crosspieces, as extending from the 

 posts on the other side to those on the other, are removed, so as to permit the frame to 

 pass either forward or backward over the trees. 



The top of the tent is attached by three ropes to the roller, while to the lower edge of 

 the tent are attached four ropes, placed at equal distances from each other; each of these 

 ropes passes through a pulley attached to a frame near each upper corner, and the end of 

 the rope is attached to the lower edge of the tent at the place where the opposite end of 

 the same rope is attached. For winding the tent upon the roller an endless rope is used 

 this passes around a grooved wheel at one end of the roller and is carried through a 

 pulley near the upper end of one of the rear corner jiosts ; from this point it passes to and 

 around a grooved wheel fastened to the crosspiece near the lower end of this post, and 

 this grooved wheel is operated by a crank. 



In taking a tent off of a tree each of the corner ropes is pulled through its pulley, draw- 

 ing the bottom of the tent upward, thus turning the tent inside out; after the tent has 

 been drawn up as far as possible, the crank operating the grooved wheel that works the 

 endless rope is turned, winding the tent upon the roller until it has been entirely removed 

 from the tree. The fumigator is thus drawn forward until the tent is brought directly 

 over the second tree, when the ropes attached to the lower edge of the tent are loosened, 

 permitting the tent to drop down over the tree, at the same time unwinding the tent 

 from the roller, and continuing this until the tent rests upon the tree. 



TJie Generator. 



The generator consists of castings and pipes and was n:iade by George 

 Gumming & Co., but was devised by Mr. Morse. It consists first of an 

 earthenware jar, which is held firmly by means of a frame, the joint being 

 made tight by means of heavy felting. Through this board two pipes pass 

 connected with receivers, one for the cyanide and one for the acid. When 

 by pouring the acid on the cyanide the gas is given out, it passes onward 

 through a four-inch pipe, which connects with the drier a largo iron cast- 



