172 Charles W. Hargitt 
cycle? If so should there not be discoverable some definite law 
of relational sequence ? 
On the assumption that organisms of this type are definitely 
organized mechanisms adjusted to the normal play of chemico- 
physical stimuli there can hardly be hesitation in answering afhrm- 
atively the several queries. Organic machines of such character, 
and designed to illustrate just such principles, are well known in 
. TABLE III 
Showing reactions of specimens A, B,C, D,E (from shallow waters), to shadow tests; intervals of recovery 
from reaction indicated in seconds. The minus sign indicates failure to react. Temperature of 
water, 22° C. 
A B Cc D E 
Deeper een Mie te oP erervoe cra ncrsie te cisiehetobe nice oases 6 7 7 8 6 
De Pe rene crs oberee rebar Tey aye ol cr MoyesercucNepogh elansts wcaje xual hey sas 5 9 16 16 5 
Fete ae USN AG DCS2 OSG GO Od ooo ncaa Rt 10 10 15 15 | = 
7 ae Re nriione Cited Chg Cera RA MCD MORIA TOO IS 9 10 ie 15a 5 
Goins cusenucncd Ewe oe toto En mocmOg yaaad aos 9 15 i AP APL 6 
(Sub adis cia aula pog.ce co tunGda dk wecomunood So 8 8 10 10 = 
I ara oe ian Ie Son OCe Cn a Sepa enoc ato aK) | = = = 
Aare neemcch pretences eather eee Aaceey army A ee 0 ABC pre Io | 10 10 — 60 
QUIS chelegsnert viene: ceapcast Mavens a ten raboqee hel oretere een teat 8 10 10 20 6 
Ley a AVIS CR ne MPR OG EEN eed ten it 7 Peete 8 9 | ~ fo 10 | 5 
1A ERS Pree sec Fitton ean ReRRN RO yO OO pom orttar ERAS 9 9 16 ite 20 
TORS alata Sa GRE. acti ob earmtc ene tn ome Sera neTe c = = = =a = 
[ele vagal tt pe Sn Oh nee ate Gp eae cheat Gate 8 8 10 10 6 
MA fires ears ates eaters atata: nie eaters: ohn. cra aks totene)p Meese RON ANS = = ~ 5 
SE ete Ja niGd Geer eR IOe Dan Ane e Ionae SCO eas 3 righ | = = = — 
ESE Soho or acind nite Boma a Seer tare 8 cutg GIGS. iit 15 15 15 112) 
Tey ten acetate isin wea sli baat Sekeen ee ees Io | 15 20 20 15 
HE ie pete in. eR CEO See oe Orme T ae. SARS mck io 12 12 = 12 
IC arty clair a Bh A OP cen haat ce ood cee Se USO OG an 7 12 15 20 12 
os ERAS Onn OO GSO SER em nT ee Hert oain Roe 8 | 12 i = | 6 
every physiological laboratory. ‘The familiar ‘‘muscle-nerve”’ 
preparation affords a good example of such. Under proper arti- 
ficial adjustment such type of vital machine can be made to react 
with some approximation toward the requirements of the mechani- 
cal theory. Other similarly devised examples are not unfamiliar, 
in which chemical processes take the place of the physical in the 
former. 
