12 BULLETIN 1232, U. S. DEPARTMENT OF AGRICULTURE. 
termes mger were found in the damaged -i-core cable by Mr. Wet j en 
near Summit. Canal Zone, in November. 1921. Injury from termites 
to the company's larger cable, which goes through a concrete duct, 
has not yet been discovered. 
A. Cooper, manager of the Cristobal office of the All America. 
Cables Co.. reported another case of damage to their cables by Copto- 
termss niger 5.3 miles south of Cristobal. 660 feet from the nearest 
splice, and in 2 feet of clay soil. The tape, rubber, and paper insu- 
lation were also perforated (PL VI. A). Workers and soldiers of 
Coptotennes niger were collected from the center wall. Miraflores 
Locks. Canal Zone, on May 15. 1922. by I. Molino and E. St. Clair 
Clayton. These termites were damaging lead-covered. 5-core. 7-wire 
rabies. 220 volts, alternating-current, at section 705. In 1 foot there 
were 7 holes and in the next foot 3 holes. Six feet of cable had to 
be replaced. Here there was a concrete cover. 2 by 3 feet, over a 
small well 3 feet deep which communicated with a tunnel used for 
cables that connected the two side sections, of which No. 705 was 
one. Under this concrete cover was found some wood used for the 
forms when the concrete was poured. This was infested with 
termites. 
Specimens of the termites inside of the lead-covered cable were 
collected as well as those in the wood. Specimens of the infested 
wood, of the damaged cable, and of damaged insulation (PL VI. 
B. C. F) were collected. All of this damage was caused by Copto- 
s mger. 
This injury to lead-sheathed cables is what might be termed a 
" local '" damage. Such cases are not at all infrequent and occurred 
also at Pedro Minuel and Gatnn. If ail the wood had been removed 
at the proper time, however, there would have been none of this 
damage. 
DAMAGE TC LIVING TP.EES. 
Cases of damage to living trees by Gopiotermes niger are as 
follows : 
On February 4, 1922. Zetek and Molino collected specimens in 
avocado trees at Frijoles. Canal Zone. Galleries had been construct- 
q the trunks of the trees (PL VI. 60. These were rough, made 
of clay, from 1 inch to 1J inches wide, and the cavity inside (or 
hollow) one-eighth inch to three-sixteenths inch in diameter. The 
termites also worked in the wood of the trunk, and a hole 4 inches 
p containing inhabited galleries wa^s observed. Knot holes and 
poorly pruned places in the trees where rot had already set in were 
- mght by these 3. Soldier termites were very 
abundant 
RIPTION or Plate VI T. 
IXTESBELATI09 HK TEBlflTI >,>'<>. r. \\|. THF, 
i. Palm C, Nurses' Quarters, An. •<>:>. o. /... 
July 7. l * • l* ir . i feel from i!i«' ground ai <1 
bad fallen \ m., July .. B, Closer view of 
. upper part <>f injury through which 
trunk where they had iuiilt :i secondary termitarium. 
abundantly iiif<'M«><i with nematodes. 
p <>f trunk. Tb«' red ring is wry proml- 
• all parte of the section. In the lower right-hand 
termitarium. D • runways of O. niger formed over- 
trunk bad r diameter of trunk about 
Injury through wi •■■ n in upper part of pie- 
