Mar. 20,1916 Temperature and Humidity and Insect Development 
1191 
(vtoxcXeia, meaning sluggishness) and can show the type of sluggishness 
by the addition of a prefix, as “ thermonochelia,” “ hygronochelia,” 
“xeronochelia,” and “rhigonochelia.” 
At least three of these factors produce under extreme conditions a 
stifling sensation, and we may express this by the terms “thermopnigia,” 
“xeropnigia,” and “ hygropnigia ” (ttpljos, meaning stifling). 
The stifling sensation ends in complete insensibility, or anesthesia, 
and this word may be modified to express the cause, as in the term “ ther- 
manesthesia,” “hygranesthesia,” “xeranesthesia,” and “rhiganesthesia.” 
Death from heat is known as thermoplegia (ir'hrjyr), meaning stroke), 
while from excessive moisture it may be known as “ hygroplegia,” and 
from freezing, as “ rhigoplegia.” Death from drying is known as “ apoxe- 
raenosis” {Liro^npalvo), meaning to dry up). 
The determination of locomotion by heat is called “thermotaxis,” and 
movement brought about by heat is called “ thermotropism.” 
Unusual sensibility to heat is called “thermalgesia” and “hyperther¬ 
malgesia.” The ability to recognize changes of temperature is “ther¬ 
mesthesia,” and its extreme is designated as “thermohyperesthesia,” 
abnormal sensitiveness to heat “stimuli.” Fondness for heat or requir¬ 
ing great heat for growth is called “thermophilic,” while resistance to 
heat is called “thermophylic.” Rapid breathing, owing to high temper¬ 
ature, is designated as “thermopolypnea,” contraction under the action 
of heat as “thermosystaltic,” adapting the bodily temperature to that of 
the environment as “ pecilothermal,” and a morbid dread of heat as 
“ thermophobia.” 
The life after apparent death, called “ anabiosis,” is exemplified in such 
cases as that of the Hermetia larvae mentioned above. 
Pain from the application of cold is called “ cryalgesia,” abnormal 
sensitiveness to cold “ cryesthesia,” and a morbid sensitiveness to cold 
“ hypercryalgesia.” 
PRACTICAL APPLICATIONS 
Many practical measures will result from the further study of climatic 
relations to life. A few of these may be indicated. 
One of the most effective measures for the control of the cattle tick is 
pasture rotation based upon the possible duration of life of the seed tick 
without an animal host. As this period varies with the season, it is 
necessary to know the climatic laws under which this species reacts. 
The fall army worm advances across the country and again retreats 
in complete accord with changing temperatures. The proper fixation 
of the zone of effective temperature may make it possible to plan the 
planting of winter crops to avoid damage. 
The cotton boll weevil must have food up to the time that it enters 
hibernation. Early harvesting and destruction of stalks before the low 
temperatures set in offer one of the most satisfactory methods of control. 
